18464368501 has 2 divisors, whose sum is σ = 18464368502. Its totient is φ = 18464368500.

The previous prime is 18464368453. The next prime is 18464368567. The reversal of 18464368501 is 10586346481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10556535025 + 7907833476 = 102745^2 + 88926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18464368501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18464368591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9232184250 + 9232184251.

It is an arithmetic number, because the mean of its divisors is an integer number (9232184251).

Almost surely, 2^18464368501 is an apocalyptic number.

It is an amenable number.

18464368501 is a deficient number, since it is larger than the sum of its proper divisors (1).

18464368501 is an equidigital number, since it uses as much as digits as its factorization.

18464368501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 18464368501 in words is "eighteen billion, four hundred sixty-four million, three hundred sixty-eight thousand, five hundred one".