18487279908 has 144 divisors (see below), whose sum is σ = 51069258240. Its totient is φ = 5617382400.

The previous prime is 18487279883. The next prime is 18487279973. The reversal of 18487279908 is 80997278481.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3835516 + ... + 3840332.

Almost surely, 2^18487279908 is an apocalyptic number.

18487279908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18487279908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25534629120).

18487279908 is an abundant number, since it is smaller than the sum of its proper divisors (32581978332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18487279908 is a wasteful number, since it uses less digits than its factorization.

18487279908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5058 (or 5053 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 63.

The spelling of 18487279908 in words is "eighteen billion, four hundred eighty-seven million, two hundred seventy-nine thousand, nine hundred eight".