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148605841 = 997149053
BaseRepresentation
bin10001101101110…
…00101110010001
3101100121221220001
420312320232101
5301020341331
622425050001
73453062116
oct1066705621
9340557801
10148605841
117697a84a
1241926901
1324a31467
1415a4490d
15d0a6561
hex8db8b91

148605841 has 4 divisors (see below), whose sum is σ = 148755892. Its totient is φ = 148455792.

The previous prime is 148605839. The next prime is 148605851. The reversal of 148605841 is 148506841.

148605841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148506841 = 721215263.

It can be written as a sum of positive squares in 2 ways, for example, as 75759616 + 72846225 = 8704^2 + 8535^2 .

It is a cyclic number.

It is not a de Polignac number, because 148605841 - 21 = 148605839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148605841.

It is not an unprimeable number, because it can be changed into a prime (148605851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73530 + ... + 75523.

It is an arithmetic number, because the mean of its divisors is an integer number (37188973).

Almost surely, 2148605841 is an apocalyptic number.

It is an amenable number.

148605841 is a deficient number, since it is larger than the sum of its proper divisors (150051).

148605841 is an equidigital number, since it uses as much as digits as its factorization.

148605841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150050.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 148605841 is about 12190.3995422628. The cubic root of 148605841 is about 529.6780303868.

The spelling of 148605841 in words is "one hundred forty-eight million, six hundred five thousand, eight hundred forty-one".

Divisors: 1 997 149053 148605841