18936132 has 12 divisors (see below), whose sum is σ = 44184336. Its totient is φ = 6312040.

The previous prime is 18936121. The next prime is 18936139. The reversal of 18936132 is 23163981.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 18936093 and 18936102.

It is not an unprimeable number, because it can be changed into a prime (18936139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788994 + ... + 789017.

It is an arithmetic number, because the mean of its divisors is an integer number (3682028).

Almost surely, 2^18936132 is an apocalyptic number.

18936132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18936132 is an abundant number, since it is smaller than the sum of its proper divisors (25248204).

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

18936132 is a wasteful number, since it uses less digits than its factorization.

18936132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578018 (or 1578016 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 18936132 is about 4351.5666144505. The cubic root of 18936132 is about 266.5408371631.

The spelling of 18936132 in words is "eighteen million, nine hundred thirty-six thousand, one hundred thirty-two".