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19001141 = 43441887
BaseRepresentation
bin100100001111…
…0111100110101
31022202100122222
41020132330311
514331014031
61515132125
7320335625
oct110367465
938670588
1019001141
11a7a8925
126444045
133c238a3
142748885
151a04e7b
hex121ef35

19001141 has 4 divisors (see below), whose sum is σ = 19443072. Its totient is φ = 18559212.

The previous prime is 19001089. The next prime is 19001153. The reversal of 19001141 is 14110091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14110091 = 40934499.

It is a cyclic number.

It is not a de Polignac number, because 19001141 - 26 = 19001077 is a prime.

It is a super-2 number, since 2×190011412 = 722086718603762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19001041) 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, 220901 + ... + 220986.

It is an arithmetic number, because the mean of its divisors is an integer number (4860768).

Almost surely, 219001141 is an apocalyptic number.

It is an amenable number.

19001141 is a deficient number, since it is larger than the sum of its proper divisors (441931).

19001141 is an equidigital number, since it uses as much as digits as its factorization.

19001141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441930.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 19001141 is about 4359.0298232520. The cubic root of 19001141 is about 266.8455062500.

The spelling of 19001141 in words is "nineteen million, one thousand, one hundred forty-one".

Divisors: 1 43 441887 19001141