18868002255 has 24 divisors (see below), whose sum is σ = 32710026960. Its totient is φ = 10061245440.

The previous prime is 18868002253. The next prime is 18868002289. The reversal of 18868002255 is 55220086881.

It is not a de Polignac number, because 18868002255 - 2¹ = 18868002253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18868002255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18868002253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263791 + ... + 327599.

It is an arithmetic number, because the mean of its divisors is an integer number (1362917790).

Almost surely, 2^18868002255 is an apocalyptic number.

18868002255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18868002255 is a deficient number, since it is larger than the sum of its proper divisors (13842024705).

18868002255 is a wasteful number, since it uses less digits than its factorization.

18868002255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70391 (or 70388 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The spelling of 18868002255 in words is "eighteen billion, eight hundred sixty-eight million, two thousand, two hundred fifty-five".