18611412 has 24 divisors (see below), whose sum is σ = 45712800. Its totient is φ = 5877216.

The previous prime is 18611401. The next prime is 18611419. The reversal of 18611412 is 21411681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18611419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40587 + ... + 41042.

It is an arithmetic number, because the mean of its divisors is an integer number (1904700).

Almost surely, 2^18611412 is an apocalyptic number.

18611412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18611412 is an abundant number, since it is smaller than the sum of its proper divisors (27101388).

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

18611412 is a wasteful number, since it uses less digits than its factorization.

18611412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81655 (or 81653 counting only the distinct ones).

The product of its digits is 384, while the sum is 24.

The square root of 18611412 is about 4314.0945747631. The cubic root of 18611412 is about 265.0084819879.

The spelling of 18611412 in words is "eighteen million, six hundred eleven thousand, four hundred twelve".