1888872972 has 72 divisors (see below), whose sum is σ = 5145893424. Its totient is φ = 537683328.

The previous prime is 1888872967. The next prime is 1888873027. The reversal of 1888872972 is 2792788881.

It is a super-2 number, since 2×1888872972² = 7135682208704225568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157078 + ... + 168674.

It is an arithmetic number, because the mean of its divisors is an integer number (71470742).

Almost surely, 2^1888872972 is an apocalyptic number.

1888872972 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 1888872972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2572946712).

1888872972 is an abundant number, since it is smaller than the sum of its proper divisors (3257020452).

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

1888872972 is a wasteful number, since it uses less digits than its factorization.

1888872972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11895 (or 11886 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 60.

The square root of 1888872972 is about 43461.1662521843. The cubic root of 1888872972 is about 1236.1397842556.

The spelling of 1888872972 in words is "one billion, eight hundred eighty-eight million, eight hundred seventy-two thousand, nine hundred seventy-two".