123791916 has 24 divisors (see below), whose sum is σ = 304050880. Its totient is φ = 39092112.

The previous prime is 123791891. The next prime is 123791929. The reversal of 123791916 is 619197321.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 271246 + ... + 271701.

Almost surely, 2^123791916 is an apocalyptic number.

It is an amenable number.

123791916 is an abundant number, since it is smaller than the sum of its proper divisors (180258964).

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

123791916 is a wasteful number, since it uses less digits than its factorization.

123791916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542973 (or 542971 counting only the distinct ones).

The product of its digits is 20412, while the sum is 39.

The square root of 123791916 is about 11126.1815552327. The cubic root of 123791916 is about 498.3840040744.

The spelling of 123791916 in words is "one hundred twenty-three million, seven hundred ninety-one thousand, nine hundred sixteen".