18220396467 has 32 divisors (see below), whose sum is σ = 30260418048. Its totient is φ = 9494954496.

The previous prime is 18220396421. The next prime is 18220396501. The reversal of 18220396467 is 76469302281.

It is not a de Polignac number, because 18220396467 - 2¹⁵ = 18220363699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18220396267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379398 + ... + 424715.

It is an arithmetic number, because the mean of its divisors is an integer number (945638064).

Almost surely, 2^18220396467 is an apocalyptic number.

18220396467 is a deficient number, since it is larger than the sum of its proper divisors (12040021581).

18220396467 is a wasteful number, since it uses less digits than its factorization.

18220396467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804219.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 18220396467 in words is "eighteen billion, two hundred twenty million, three hundred ninety-six thousand, four hundred sixty-seven".