157580739 has 18 divisors (see below), whose sum is σ = 229369140. Its totient is φ = 104250888.

The previous prime is 157580723. The next prime is 157580741. The reversal of 157580739 is 937085751.

157580739 is a `hidden beast` number, since 1 + 575 + 8 + 0 + 73 + 9 = 666.

It is not a de Polignac number, because 157580739 - 2⁴ = 157580723 is a prime.

It is a super-2 number, since 2×157580739² = 49663378607572242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157580694 and 157580703.

It is not an unprimeable number, because it can be changed into a prime (157580779) 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, 238792 + ... + 239450.

It is an arithmetic number, because the mean of its divisors is an integer number (12742730).

Almost surely, 2^157580739 is an apocalyptic number.

157580739 is a deficient number, since it is larger than the sum of its proper divisors (71788401).

157580739 is an equidigital number, since it uses as much as digits as its factorization.

157580739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The square root of 157580739 is about 12553.1167046276. The cubic root of 157580739 is about 540.1334135379.

The spelling of 157580739 in words is "one hundred fifty-seven million, five hundred eighty thousand, seven hundred thirty-nine".