18145022 has 32 divisors (see below), whose sum is σ = 33357312. Its totient is φ = 7232544.

The previous prime is 18145009. The next prime is 18145031. The reversal of 18145022 is 22054181.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 11153 + ... + 12675.

It is an arithmetic number, because the mean of its divisors is an integer number (1042416).

Almost surely, 2^18145022 is an apocalyptic number.

18145022 is a deficient number, since it is larger than the sum of its proper divisors (15212290).

18145022 is a wasteful number, since it uses less digits than its factorization.

18145022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 18145022 is about 4259.6974070936. The cubic root of 18145022 is about 262.7760820182.

The spelling of 18145022 in words is "eighteen million, one hundred forty-five thousand, twenty-two".