18745861430 has 32 divisors (see below), whose sum is σ = 33963148800. Its totient is φ = 7449482880.

The previous prime is 18745861399. The next prime is 18745861441. The reversal of 18745861430 is 3416854781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957035 + ... + 976425.

It is an arithmetic number, because the mean of its divisors is an integer number (1061348400).

Almost surely, 2^18745861430 is an apocalyptic number.

18745861430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18745861430 is a deficient number, since it is larger than the sum of its proper divisors (15217287370).

18745861430 is a wasteful number, since it uses less digits than its factorization.

18745861430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20024.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 18745861430 in words is "eighteen billion, seven hundred forty-five million, eight hundred sixty-one thousand, four hundred thirty".