148915801 has 8 divisors (see below), whose sum is σ = 157812840. Its totient is φ = 140034048.

The previous prime is 148915729. The next prime is 148915817. The reversal of 148915801 is 108519841.

It can be written as a sum of positive squares in 4 ways, for example, as 15397776 + 133518025 = 3924^2 + 11555^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148915801 - 2²¹ = 146818649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148915201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20845 + ... + 27061.

It is an arithmetic number, because the mean of its divisors is an integer number (19726605).

Almost surely, 2^148915801 is an apocalyptic number.

It is an amenable number.

148915801 is a deficient number, since it is larger than the sum of its proper divisors (8897039).

148915801 is a wasteful number, since it uses less digits than its factorization.

148915801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7643.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 148915801 is about 12203.1062029305. The cubic root of 148915801 is about 530.0460396697.

The spelling of 148915801 in words is "one hundred forty-eight million, nine hundred fifteen thousand, eight hundred one".