149415657 has 16 divisors (see below), whose sum is σ = 207968832. Its totient is φ = 95325120.

The previous prime is 149415653. The next prime is 149415661. The reversal of 149415657 is 756514941.

It is an interprime number because it is at equal distance from previous prime (149415653) and next prime (149415661).

It is not a de Polignac number, because 149415657 - 2² = 149415653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149415653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4263 + ... + 17804.

It is an arithmetic number, because the mean of its divisors is an integer number (12998052).

Almost surely, 2^149415657 is an apocalyptic number.

It is an amenable number.

149415657 is a deficient number, since it is larger than the sum of its proper divisors (58553175).

149415657 is a wasteful number, since it uses less digits than its factorization.

149415657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22168.

The product of its digits is 151200, while the sum is 42.

The square root of 149415657 is about 12223.5697322836. The cubic root of 149415657 is about 530.6384343873.

The spelling of 149415657 in words is "one hundred forty-nine million, four hundred fifteen thousand, six hundred fifty-seven".