149657907 has 18 divisors (see below), whose sum is σ = 232352748. Its totient is φ = 85434048.

The previous prime is 149657899. The next prime is 149657909. The reversal of 149657907 is 709756941.

It is a happy number.

It is not a de Polignac number, because 149657907 - 2³ = 149657899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149657909) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 147819 + ... + 148827.

It is an arithmetic number, because the mean of its divisors is an integer number (12908486).

Almost surely, 2^149657907 is an apocalyptic number.

149657907 is a deficient number, since it is larger than the sum of its proper divisors (82694841).

149657907 is an frugal number, since it uses more digits than its factorization.

149657907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 149657907 is about 12233.4748538590. The cubic root of 149657907 is about 530.9250570746.

Multiplying 149657907 by its sum of digits (48), we get a square (7183579536 = 84756²).

The spelling of 149657907 in words is "one hundred forty-nine million, six hundred fifty-seven thousand, nine hundred seven".