18864359716 has 6 divisors (see below), whose sum is σ = 33012629510. Its totient is φ = 9432179856.

The previous prime is 18864359711. The next prime is 18864359729. The reversal of 18864359716 is 61795346881.

It can be written as a sum of positive squares in only one way, i.e., 10962927616 + 7901432100 = 104704^2 + 88890^2 .

It is a super-3 number, since 3×18864359716³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18864359711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2358044961 + ... + 2358044968.

Almost surely, 2^18864359716 is an apocalyptic number.

It is an amenable number.

18864359716 is a deficient number, since it is larger than the sum of its proper divisors (14148269794).

18864359716 is a wasteful number, since it uses less digits than its factorization.

18864359716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4716089933 (or 4716089931 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 58.

The spelling of 18864359716 in words is "eighteen billion, eight hundred sixty-four million, three hundred fifty-nine thousand, seven hundred sixteen".