18936045 has 64 divisors (see below), whose sum is σ = 36771840. Its totient is φ = 9206784.

The previous prime is 18936041. The next prime is 18936053. The reversal of 18936045 is 54063981.

It is not a de Polignac number, because 18936045 - 2² = 18936041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18936041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84804 + ... + 85026.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^18936045 is an apocalyptic number.

18936045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18936045 is a deficient number, since it is larger than the sum of its proper divisors (17835795).

18936045 is a wasteful number, since it uses less digits than its factorization.

18936045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 18936045 is about 4351.5566180391. The cubic root of 18936045 is about 266.5404289649.

The spelling of 18936045 in words is "eighteen million, nine hundred thirty-six thousand, forty-five".