18494037 has 12 divisors (see below), whose sum is σ = 26863564. Its totient is φ = 12260160.

The previous prime is 18494033. The next prime is 18494051. The reversal of 18494037 is 73049481.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1920996 + 16573041 = 1386^2 + 4071^2 .

It is not a de Polignac number, because 18494037 - 2² = 18494033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18493992 and 18494010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18494033) 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 11 ways as a sum of consecutive naturals, for example, 4048 + ... + 7305.

Almost surely, 2^18494037 is an apocalyptic number.

It is an amenable number.

18494037 is a deficient number, since it is larger than the sum of its proper divisors (8369527).

18494037 is a wasteful number, since it uses less digits than its factorization.

18494037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11540 (or 11537 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 18494037 is about 4300.4693929849. The cubic root of 18494037 is about 264.4502046166.

It can be divided in two parts, 1849 and 4037, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 18494037 in words is "eighteen million, four hundred ninety-four thousand, thirty-seven".