123618988 has 12 divisors (see below), whose sum is σ = 216484240. Its totient is φ = 61766352.

The previous prime is 123618973. The next prime is 123618991. The reversal of 123618988 is 889816321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3843 + ... + 16186.

Almost surely, 2^123618988 is an apocalyptic number.

It is an amenable number.

123618988 is a deficient number, since it is larger than the sum of its proper divisors (92865252).

123618988 is a wasteful number, since it uses less digits than its factorization.

123618988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21576 (or 21574 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The square root of 123618988 is about 11118.4076197988. The cubic root of 123618988 is about 498.1518276014.

The spelling of 123618988 in words is "one hundred twenty-three million, six hundred eighteen thousand, nine hundred eighty-eight".