18188034367 has 6 divisors (see below), whose sum is σ = 18327951464. Its totient is φ = 18049177380.

The previous prime is 18188034311. The next prime is 18188034391. The reversal of 18188034367 is 76343088181.

It is a happy number.

It is not a de Polignac number, because 18188034367 - 2²⁷ = 18053816639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18188034367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18188032367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512763 + ... + 547084.

Almost surely, 2^18188034367 is an apocalyptic number.

18188034367 is a deficient number, since it is larger than the sum of its proper divisors (139917097).

18188034367 is an equidigital number, since it uses as much as digits as its factorization.

18188034367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060109 (or 1059978 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 18188034367 in words is "eighteen billion, one hundred eighty-eight million, thirty-four thousand, three hundred sixty-seven".