157989944 has 32 divisors (see below), whose sum is σ = 353272320. Its totient is φ = 64765536.

The previous prime is 157989929. The next prime is 157989971. The reversal of 157989944 is 449989751.

157989944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 157989944.

It is a congruent number.

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, 60044 + ... + 62619.

It is an arithmetic number, because the mean of its divisors is an integer number (11039760).

Almost surely, 2^157989944 is an apocalyptic number.

157989944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

157989944 is an abundant number, since it is smaller than the sum of its proper divisors (195282376).

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

157989944 is a wasteful number, since it uses less digits than its factorization.

157989944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122699 (or 122695 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 56.

The square root of 157989944 is about 12569.4050774092. The cubic root of 157989944 is about 540.6005481451.

The spelling of 157989944 in words is "one hundred fifty-seven million, nine hundred eighty-nine thousand, nine hundred forty-four".