157007909 has 16 divisors (see below), whose sum is σ = 166458240. Its totient is φ = 147913920.

The previous prime is 157007899. The next prime is 157007927. The reversal of 157007909 is 909700751.

It is a cyclic number.

It is not a de Polignac number, because 157007909 - 2²⁰ = 155959333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157007009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154487 + ... + 155499.

It is an arithmetic number, because the mean of its divisors is an integer number (10403640).

Almost surely, 2^157007909 is an apocalyptic number.

It is an amenable number.

157007909 is a deficient number, since it is larger than the sum of its proper divisors (9450331).

157007909 is a wasteful number, since it uses less digits than its factorization.

157007909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 157007909 is about 12530.2796856255. The cubic root of 157007909 is about 539.4781297868.

The spelling of 157007909 in words is "one hundred fifty-seven million, seven thousand, nine hundred nine".