18461836 has 12 divisors (see below), whose sum is σ = 32344312. Its totient is φ = 9220608.

The previous prime is 18461831. The next prime is 18461837. The reversal of 18461836 is 63816481.

It is a junction number, because it is equal to n+sod(n) for n = 18461795 and 18461804.

It is not an unprimeable number, because it can be changed into a prime (18461831) by changing a digit.

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, 2611 + ... + 6613.

Almost surely, 2^18461836 is an apocalyptic number.

It is an amenable number.

18461836 is a deficient number, since it is larger than the sum of its proper divisors (13882476).

18461836 is a wasteful number, since it uses less digits than its factorization.

18461836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160 (or 5158 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 18461836 is about 4296.7238682513. The cubic root of 18461836 is about 264.2966324475.

The spelling of 18461836 in words is "eighteen million, four hundred sixty-one thousand, eight hundred thirty-six".