157908766 has 4 divisors (see below), whose sum is σ = 236863152. Its totient is φ = 78954382.

The previous prime is 157908763. The next prime is 157908797. The reversal of 157908766 is 667809751.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157908763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39477190 + ... + 39477193.

It is an arithmetic number, because the mean of its divisors is an integer number (59215788).

Almost surely, 2^157908766 is an apocalyptic number.

157908766 is a deficient number, since it is larger than the sum of its proper divisors (78954386).

157908766 is an equidigital number, since it uses as much as digits as its factorization.

157908766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78954385.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 157908766 is about 12566.1754722748. The cubic root of 157908766 is about 540.5079422728.

The spelling of 157908766 in words is "one hundred fifty-seven million, nine hundred eight thousand, seven hundred sixty-six".