18863468984 has 16 divisors (see below), whose sum is σ = 35506630800. Its totient is φ = 9395034112.

The previous prime is 18863468927. The next prime is 18863469011. The reversal of 18863468984 is 48986436881.

It is a super-2 number, since 2×18863468984² (a number of 21 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 18863468984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4585364 + ... + 4589475.

It is an arithmetic number, because the mean of its divisors is an integer number (2219164425).

Almost surely, 2^18863468984 is an apocalyptic number.

It is an amenable number.

18863468984 is a deficient number, since it is larger than the sum of its proper divisors (16643161816).

18863468984 is a wasteful number, since it uses less digits than its factorization.

18863468984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9175102 (or 9175098 counting only the distinct ones).

The product of its digits is 63700992, while the sum is 65.

The spelling of 18863468984 in words is "eighteen billion, eight hundred sixty-three million, four hundred sixty-eight thousand, nine hundred eighty-four".