18695379424 has 192 divisors, whose sum is σ = 40601917440. Its totient is φ = 8453652480.

The previous prime is 18695379401. The next prime is 18695379431. The reversal of 18695379424 is 42497359681.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147207649 + ... + 147207775.

It is an arithmetic number, because the mean of its divisors is an integer number (211468320).

Almost surely, 2^18695379424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18695379424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20300958720).

18695379424 is an abundant number, since it is smaller than the sum of its proper divisors (21906538016).

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

18695379424 is a wasteful number, since it uses less digits than its factorization.

18695379424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 325 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 58.

The spelling of 18695379424 in words is "eighteen billion, six hundred ninety-five million, three hundred seventy-nine thousand, four hundred twenty-four".