18380964265 has 8 divisors (see below), whose sum is σ = 22172640768. Its totient is φ = 14627782320.

The previous prime is 18380964227. The next prime is 18380964271. The reversal of 18380964265 is 56246908381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18380964265 - 2⁹ = 18380963753 is a prime.

It is a super-2 number, since 2×18380964265² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9622587 + ... + 9624496.

It is an arithmetic number, because the mean of its divisors is an integer number (2771580096).

Almost surely, 2^18380964265 is an apocalyptic number.

It is an amenable number.

18380964265 is a deficient number, since it is larger than the sum of its proper divisors (3791676503).

18380964265 is a wasteful number, since it uses less digits than its factorization.

18380964265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19247279.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 18380964265 in words is "eighteen billion, three hundred eighty million, nine hundred sixty-four thousand, two hundred sixty-five".