18875214648 has 128 divisors (see below), whose sum is σ = 55940544000. Its totient is φ = 5876282880.

The previous prime is 18875214641. The next prime is 18875214697. The reversal of 18875214648 is 84641257881.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 18875214594 and 18875214603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18875214641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461413 + ... + 500651.

It is an arithmetic number, because the mean of its divisors is an integer number (437035500).

Almost surely, 2^18875214648 is an apocalyptic number.

18875214648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18875214648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27970272000).

18875214648 is an abundant number, since it is smaller than the sum of its proper divisors (37065329352).

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

18875214648 is a wasteful number, since it uses less digits than its factorization.

18875214648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39402 (or 39392 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The spelling of 18875214648 in words is "eighteen billion, eight hundred seventy-five million, two hundred fourteen thousand, six hundred forty-eight".