18740045 has 16 divisors (see below), whose sum is σ = 23265792. Its totient is φ = 14481600.

The previous prime is 18740021. The next prime is 18740053. The reversal of 18740045 is 54004781.

It is not a de Polignac number, because 18740045 - 2⁸ = 18739789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21284 + ... + 22146.

It is an arithmetic number, because the mean of its divisors is an integer number (1454112).

Almost surely, 2^18740045 is an apocalyptic number.

It is an amenable number.

18740045 is a deficient number, since it is larger than the sum of its proper divisors (4525747).

18740045 is a wasteful number, since it uses less digits than its factorization.

18740045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 18740045 is about 4328.9773619182. The cubic root of 18740045 is about 265.6176172343.

The spelling of 18740045 in words is "eighteen million, seven hundred forty thousand, forty-five".