18867943470 has 16 divisors (see below), whose sum is σ = 45283064400. Its totient is φ = 5031451584.

The previous prime is 18867943453. The next prime is 18867943481. The reversal of 18867943470 is 7434976881.

18867943470 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18867943470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314465695 + ... + 314465754.

It is an arithmetic number, because the mean of its divisors is an integer number (2830191525).

Almost surely, 2^18867943470 is an apocalyptic number.

18867943470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18867943470 is an abundant number, since it is smaller than the sum of its proper divisors (26415120930).

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

18867943470 is a wasteful number, since it uses less digits than its factorization.

18867943470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628931459.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 18867943470 in words is "eighteen billion, eight hundred sixty-seven million, nine hundred forty-three thousand, four hundred seventy".