18115622 has 16 divisors (see below), whose sum is σ = 31114752. Its totient is φ = 7749000.

The previous prime is 18115619. The next prime is 18115627. The reversal of 18115622 is 22651181.

It is a junction number, because it is equal to n+sod(n) for n = 18115591 and 18115600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18115627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9653 + ... + 11375.

It is an arithmetic number, because the mean of its divisors is an integer number (1944672).

Almost surely, 2^18115622 is an apocalyptic number.

18115622 is a deficient number, since it is larger than the sum of its proper divisors (12999130).

18115622 is a wasteful number, since it uses less digits than its factorization.

18115622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483.

The product of its digits is 960, while the sum is 26.

The square root of 18115622 is about 4256.2450587343. The cubic root of 18115622 is about 262.6340817656.

The spelling of 18115622 in words is "eighteen million, one hundred fifteen thousand, six hundred twenty-two".