18367845465 has 16 divisors (see below), whose sum is σ = 29648631168. Its totient is φ = 9709491456.

The previous prime is 18367845451. The next prime is 18367845473. The reversal of 18367845465 is 56454876381.

It is not a de Polignac number, because 18367845465 - 2⁹ = 18367844953 is a prime.

It is a super-2 number, since 2×18367845465² (a number of 21 digits) contains 22 as substring.

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, 5416549 + ... + 5419938.

It is an arithmetic number, because the mean of its divisors is an integer number (1853039448).

Almost surely, 2^18367845465 is an apocalyptic number.

18367845465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18367845465 is a deficient number, since it is larger than the sum of its proper divisors (11280785703).

18367845465 is a wasteful number, since it uses less digits than its factorization.

18367845465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10836608.

The product of its digits is 19353600, while the sum is 57.

The spelling of 18367845465 in words is "eighteen billion, three hundred sixty-seven million, eight hundred forty-five thousand, four hundred sixty-five".