18145736 has 16 divisors (see below), whose sum is σ = 38883840. Its totient is φ = 7776720.

The previous prime is 18145711. The next prime is 18145759. The reversal of 18145736 is 63754181.

It is a junction number, because it is equal to n+sod(n) for n = 18145696 and 18145705.

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, 161960 + ... + 162071.

It is an arithmetic number, because the mean of its divisors is an integer number (2430240).

Almost surely, 2^18145736 is an apocalyptic number.

It is an amenable number.

18145736 is an abundant number, since it is smaller than the sum of its proper divisors (20738104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18145736 is a wasteful number, since it uses less digits than its factorization.

18145736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324044 (or 324040 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 18145736 is about 4259.7812150391. The cubic root of 18145736 is about 262.7795286873.

It can be divided in two parts, 18145 and 736, that added together give a palindrome (18881).

The spelling of 18145736 in words is "eighteen million, one hundred forty-five thousand, seven hundred thirty-six".