157930786 has 8 divisors (see below), whose sum is σ = 255119004. Its totient is φ = 72891120.

The previous prime is 157930783. The next prime is 157930807. The reversal of 157930786 is 687039751.

It can be written as a sum of positive squares in 2 ways, for example, as 128391561 + 29539225 = 11331^2 + 5435^2 .

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

It is not an unprimeable number, because it can be changed into a prime (157930783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3037105 + ... + 3037156.

Almost surely, 2^157930786 is an apocalyptic number.

157930786 is a deficient number, since it is larger than the sum of its proper divisors (97188218).

157930786 is a wasteful number, since it uses less digits than its factorization.

157930786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074276.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 157930786 is about 12567.0516032998. The cubic root of 157930786 is about 540.5330652853.

The spelling of 157930786 in words is "one hundred fifty-seven million, nine hundred thirty thousand, seven hundred eighty-six".