18867601317 has 16 divisors (see below), whose sum is σ = 26639608320. Its totient is φ = 11837164032.

The previous prime is 18867601307. The next prime is 18867601349. The reversal of 18867601317 is 71310676881.

It is a happy number.

It is not a de Polignac number, because 18867601317 - 2¹⁹ = 18867077029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18867601307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642988 + ... + 671690.

It is an arithmetic number, because the mean of its divisors is an integer number (1664975520).

Almost surely, 2^18867601317 is an apocalyptic number.

18867601317 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18867601317 is a deficient number, since it is larger than the sum of its proper divisors (7772007003).

18867601317 is a wasteful number, since it uses less digits than its factorization.

18867601317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41612.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 18867601317 in words is "eighteen billion, eight hundred sixty-seven million, six hundred one thousand, three hundred seventeen".