18862426881 has 32 divisors (see below), whose sum is σ = 28169856000. Its totient is φ = 12473700480.

The previous prime is 18862426879. The next prime is 18862426889.

18862426881 is a `hidden beast` number, since 1 + 8 + 8 + 624 + 2 + 6 + 8 + 8 + 1 = 666.

18862426881 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 18862426881 - 2¹ = 18862426879 is a prime.

It is a super-2 number, since 2×18862426881² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18862426889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3444976 + ... + 3450446.

It is an arithmetic number, because the mean of its divisors is an integer number (880308000).

Almost surely, 2^18862426881 is an apocalyptic number.

It is an amenable number.

18862426881 is a deficient number, since it is larger than the sum of its proper divisors (9307429119).

18862426881 is a wasteful number, since it uses less digits than its factorization.

18862426881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6486 (or 6480 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 54.

The spelling of 18862426881 in words is "eighteen billion, eight hundred sixty-two million, four hundred twenty-six thousand, eight hundred eighty-one".