157609739 has 8 divisors (see below), whose sum is σ = 180250368. Its totient is φ = 135000360.

The previous prime is 157609729. The next prime is 157609741. The reversal of 157609739 is 937906751.

It is a happy number.

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 157609739 - 2⁸ = 157609483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157609693 and 157609702.

It is not an unprimeable number, because it can be changed into a prime (157609729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4244 + ... + 18254.

It is an arithmetic number, because the mean of its divisors is an integer number (22531296).

Almost surely, 2^157609739 is an apocalyptic number.

157609739 is a deficient number, since it is larger than the sum of its proper divisors (22640629).

157609739 is a wasteful number, since it uses less digits than its factorization.

157609739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15625.

The product of its (nonzero) digits is 357210, while the sum is 47.

The square root of 157609739 is about 12554.2717431160. The cubic root of 157609739 is about 540.1665455656.

The spelling of 157609739 in words is "one hundred fifty-seven million, six hundred nine thousand, seven hundred thirty-nine".