18419250252 has 48 divisors (see below), whose sum is σ = 46804353120. Its totient is φ = 5603778048.

The previous prime is 18419250233. The next prime is 18419250299. The reversal of 18419250252 is 25205291481.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 18419250252.

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, 649443 + ... + 677210.

It is an arithmetic number, because the mean of its divisors is an integer number (975090690).

Almost surely, 2^18419250252 is an apocalyptic number.

18419250252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18419250252 is an abundant number, since it is smaller than the sum of its proper divisors (28385102868).

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

18419250252 is a wasteful number, since it uses less digits than its factorization.

18419250252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326762 (or 1326760 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 18419250252 in words is "eighteen billion, four hundred nineteen million, two hundred fifty thousand, two hundred fifty-two".