157308673 has 8 divisors (see below), whose sum is σ = 163017000. Its totient is φ = 151619328.

The previous prime is 157308631. The next prime is 157308689. The reversal of 157308673 is 376803751.

It can be written as a sum of positive squares in 4 ways, for example, as 16459249 + 140849424 = 4057^2 + 11868^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157308673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157308623) 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, 13353 + ... + 22201.

It is an arithmetic number, because the mean of its divisors is an integer number (20377125).

Almost surely, 2^157308673 is an apocalyptic number.

It is an amenable number.

157308673 is a deficient number, since it is larger than the sum of its proper divisors (5708327).

157308673 is an equidigital number, since it uses as much as digits as its factorization.

157308673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9491.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 157308673 is about 12542.2754315156. The cubic root of 157308673 is about 539.8223844296.

The spelling of 157308673 in words is "one hundred fifty-seven million, three hundred eight thousand, six hundred seventy-three".