18980632 has 16 divisors (see below), whose sum is σ = 38824200. Its totient is φ = 8627520.

The previous prime is 18980629. The next prime is 18980659. The reversal of 18980632 is 23608981.

It is a super-2 number, since 2×18980632² = 720528782238848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18980591 and 18980600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107757 + ... + 107932.

Almost surely, 2^18980632 is an apocalyptic number.

It is an amenable number.

18980632 is an abundant number, since it is smaller than the sum of its proper divisors (19843568).

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

18980632 is a wasteful number, since it uses less digits than its factorization.

18980632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215706 (or 215702 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 18980632 is about 4356.6767151121. The cubic root of 18980632 is about 266.7494645670.

The spelling of 18980632 in words is "eighteen million, nine hundred eighty thousand, six hundred thirty-two".