18145744 has 20 divisors (see below), whose sum is σ = 35684224. Its totient is φ = 8936928.

The previous prime is 18145711. The next prime is 18145759. The reversal of 18145744 is 44754181.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7392 + ... + 9535.

Almost surely, 2^18145744 is an apocalyptic number.

It is an amenable number.

18145744 is a deficient number, since it is larger than the sum of its proper divisors (17538480).

18145744 is a wasteful number, since it uses less digits than its factorization.

18145744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17002 (or 16996 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 18145744 is about 4259.7821540544. The cubic root of 18145744 is about 262.7795673050.

The spelling of 18145744 in words is "eighteen million, one hundred forty-five thousand, seven hundred forty-four".