18748459886 has 16 divisors (see below), whose sum is σ = 30486549408. Its totient is φ = 8595828000.

The previous prime is 18748459819. The next prime is 18748459889. The reversal of 18748459886 is 68895484781.

It is a super-2 number, since 2×18748459886² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18748459889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2383805 + ... + 2391656.

It is an arithmetic number, because the mean of its divisors is an integer number (1905409338).

Almost surely, 2^18748459886 is an apocalyptic number.

18748459886 is a deficient number, since it is larger than the sum of its proper divisors (11738089522).

18748459886 is a wasteful number, since it uses less digits than its factorization.

18748459886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775627.

The product of its digits is 123863040, while the sum is 68.

The spelling of 18748459886 in words is "eighteen billion, seven hundred forty-eight million, four hundred fifty-nine thousand, eight hundred eighty-six".