18164234531967 has 4 divisors (see below), whose sum is σ = 24218979375960. Its totient is φ = 12109489687976.

The previous prime is 18164234531921. The next prime is 18164234531981. The reversal of 18164234531967 is 76913543246181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18164234531967 - 2²³ = 18164226143359 is a prime.

It is a super-2 number, since 2×18164234531967² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18164234531967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18164234531167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3027372421992 + ... + 3027372421997.

It is an arithmetic number, because the mean of its divisors is an integer number (6054744843990).

Almost surely, 2^{18164234531967} is an apocalyptic number.

18164234531967 is a deficient number, since it is larger than the sum of its proper divisors (6054744843993).

18164234531967 is an equidigital number, since it uses as much as digits as its factorization.

18164234531967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054744843992.

The product of its digits is 26127360, while the sum is 60.

The spelling of 18164234531967 in words is "eighteen trillion, one hundred sixty-four billion, two hundred thirty-four million, five hundred thirty-one thousand, nine hundred sixty-seven".