18870278832 has 160 divisors (see below), whose sum is σ = 57424578560. Its totient is φ = 5922512640.

The previous prime is 18870278821. The next prime is 18870278837. The reversal of 18870278832 is 23887207881.

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

It is not an unprimeable number, because it can be changed into a prime (18870278837) 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, 476463 + ... + 514545.

It is an arithmetic number, because the mean of its divisors is an integer number (358903616).

Almost surely, 2^18870278832 is an apocalyptic number.

18870278832 is a gapful number since it is divisible by the number (12) 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 18870278832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28712289280).

18870278832 is an abundant number, since it is smaller than the sum of its proper divisors (38554299728).

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

18870278832 is a wasteful number, since it uses less digits than its factorization.

18870278832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38168 (or 38156 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 54.

The spelling of 18870278832 in words is "eighteen billion, eight hundred seventy million, two hundred seventy-eight thousand, eight hundred thirty-two".