2153518900 has 72 divisors (see below), whose sum is σ = 5297542880. Its totient is φ = 753287040.

The previous prime is 2153518847. The next prime is 2153518901. The reversal of 2153518900 is 98153512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153518901) 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, 18894 + ... + 68293.

Almost surely, 2^2153518900 is an apocalyptic number.

2153518900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153518900 is an abundant number, since it is smaller than the sum of its proper divisors (3144023980).

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

2153518900 is a wasteful number, since it uses less digits than its factorization.

2153518900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87233 (or 87226 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 2153518900 is about 46406.0222384983. The cubic root of 2153518900 is about 1291.3666385124.

The spelling of 2153518900 in words is "two billion, one hundred fifty-three million, five hundred eighteen thousand, nine hundred".