18940612 has 6 divisors (see below), whose sum is σ = 33146078. Its totient is φ = 9470304.

The previous prime is 18940609. The next prime is 18940627. The reversal of 18940612 is 21604981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12559936 + 6380676 = 3544^2 + 2526^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2367573 + ... + 2367580.

Almost surely, 2^18940612 is an apocalyptic number.

It is an amenable number.

18940612 is a deficient number, since it is larger than the sum of its proper divisors (14205466).

18940612 is a wasteful number, since it uses less digits than its factorization.

18940612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4735157 (or 4735155 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18940612 is about 4352.0813411516. The cubic root of 18940612 is about 266.5618553379.

The spelling of 18940612 in words is "eighteen million, nine hundred forty thousand, six hundred twelve".