157911980 has 24 divisors (see below), whose sum is σ = 351122688. Its totient is φ = 59449088.

The previous prime is 157911973. The next prime is 157912003. The reversal of 157911980 is 89119751.

157911980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231884 + ... + 232563.

It is an arithmetic number, because the mean of its divisors is an integer number (14630112).

Almost surely, 2^157911980 is an apocalyptic number.

157911980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157911980 is an abundant number, since it is smaller than the sum of its proper divisors (193210708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157911980 is a wasteful number, since it uses less digits than its factorization.

157911980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464473 (or 464471 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 41.

The square root of 157911980 is about 12566.3033546067. The cubic root of 157911980 is about 540.5116093286.

It can be divided in two parts, 15791 and 1980, that added together give a palindrome (17771).

The spelling of 157911980 in words is "one hundred fifty-seven million, nine hundred eleven thousand, nine hundred eighty".