2153873988 has 72 divisors (see below), whose sum is σ = 6349324800. Its totient is φ = 615389040.

The previous prime is 2153873971. The next prime is 2153873989. The reversal of 2153873988 is 8893783512.

2153873988 is a `hidden beast` number, since 21 + 538 + 7 + 3 + 9 + 88 = 666.

It is not an unprimeable number, because it can be changed into a prime (2153873989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74868 + ... + 99563.

Almost surely, 2^2153873988 is an apocalyptic number.

2153873988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2153873988 is an abundant number, since it is smaller than the sum of its proper divisors (4195450812).

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

2153873988 is a wasteful number, since it uses less digits than its factorization.

2153873988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174462 (or 174443 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 2153873988 is about 46409.8479635519. The cubic root of 2153873988 is about 1291.4376112811.

The spelling of 2153873988 in words is "two billion, one hundred fifty-three million, eight hundred seventy-three thousand, nine hundred eighty-eight".