18494937 has 12 divisors (see below), whose sum is σ = 26817024. Its totient is φ = 12282840.

The previous prime is 18494909. The next prime is 18494981. The reversal of 18494937 is 73949481.

It is not a de Polignac number, because 18494937 - 2⁶ = 18494873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18494892 and 18494901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18498937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1353 + ... + 6230.

It is an arithmetic number, because the mean of its divisors is an integer number (2234752).

Almost surely, 2^18494937 is an apocalyptic number.

It is an amenable number.

18494937 is a deficient number, since it is larger than the sum of its proper divisors (8322087).

18494937 is a wasteful number, since it uses less digits than its factorization.

18494937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7860 (or 7857 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 18494937 is about 4300.5740314521. The cubic root of 18494937 is about 264.4544943114.

It can be divided in two parts, 1849 and 4937, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 18494937 in words is "eighteen million, four hundred ninety-four thousand, nine hundred thirty-seven".