18499412 has 6 divisors (see below), whose sum is σ = 32373978. Its totient is φ = 9249704.

The previous prime is 18499379. The next prime is 18499421. The reversal of 18499412 is 21499481.

It can be written as a sum of positive squares in only one way, i.e., 9523396 + 8976016 = 3086^2 + 2996^2 .

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 as a sum of consecutive naturals, namely, 2312423 + ... + 2312430.

It is an arithmetic number, because the mean of its divisors is an integer number (5395663).

Almost surely, 2^18499412 is an apocalyptic number.

It is an amenable number.

18499412 is a deficient number, since it is larger than the sum of its proper divisors (13874566).

18499412 is a wasteful number, since it uses less digits than its factorization.

18499412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624857 (or 4624855 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 18499412 is about 4301.0942793666. The cubic root of 18499412 is about 264.4758215612.

The spelling of 18499412 in words is "eighteen million, four hundred ninety-nine thousand, four hundred twelve".