18622215073 has 16 divisors (see below), whose sum is σ = 23337622656. Its totient is φ = 14435619840.

The previous prime is 18622215043. The next prime is 18622215133. The reversal of 18622215073 is 37051222681.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18622215073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18622215043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611686 + ... + 641407.

It is an arithmetic number, because the mean of its divisors is an integer number (1458601416).

Almost surely, 2^18622215073 is an apocalyptic number.

It is an amenable number.

18622215073 is a deficient number, since it is larger than the sum of its proper divisors (4715407583).

18622215073 is a wasteful number, since it uses less digits than its factorization.

18622215073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253304.

The product of its (nonzero) digits is 40320, while the sum is 37.

It can be divided in two parts, 186222 and 15073, that added together give a triangular number (201295 = T₆₃₄).

The spelling of 18622215073 in words is "eighteen billion, six hundred twenty-two million, two hundred fifteen thousand, seventy-three".