157320649 has 8 divisors (see below), whose sum is σ = 161763840. Its totient is φ = 152906400.

The previous prime is 157320643. The next prime is 157320671. The reversal of 157320649 is 946023751.

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 157320649 - 2²⁵ = 123766217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157320643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4032 + ... + 18190.

It is an arithmetic number, because the mean of its divisors is an integer number (20220480).

Almost surely, 2^157320649 is an apocalyptic number.

It is an amenable number.

157320649 is a deficient number, since it is larger than the sum of its proper divisors (4443191).

157320649 is a wasteful number, since it uses less digits than its factorization.

157320649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14471.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 157320649 is about 12542.7528477603. The cubic root of 157320649 is about 539.8360830784.

It can be divided in two parts, 1573 and 20649, that added together give a palindrome (22222).

The spelling of 157320649 in words is "one hundred fifty-seven million, three hundred twenty thousand, six hundred forty-nine".