157971844 has 12 divisors (see below), whose sum is σ = 277095168. Its totient is φ = 78801800.

The previous prime is 157971817. The next prime is 157971859. The reversal of 157971844 is 448179751.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 157971794 and 157971803.

It is an unprimeable number.

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, 44092 + ... + 47539.

It is an arithmetic number, because the mean of its divisors is an integer number (23091264).

Almost surely, 2^157971844 is an apocalyptic number.

It is an amenable number.

157971844 is a deficient number, since it is larger than the sum of its proper divisors (119123324).

157971844 is a wasteful number, since it uses less digits than its factorization.

157971844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92066 (or 92064 counting only the distinct ones).

The product of its digits is 282240, while the sum is 46.

The square root of 157971844 is about 12568.6850545314. The cubic root of 157971844 is about 540.5799028572.

The spelling of 157971844 in words is "one hundred fifty-seven million, nine hundred seventy-one thousand, eight hundred forty-four".