2153869872 has 200 divisors, whose sum is σ = 7085409600. Its totient is φ = 559117440.

The previous prime is 2153869829. The next prime is 2153869897. The reversal of 2153869872 is 2789683512.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1266879 + ... + 1268577.

It is an arithmetic number, because the mean of its divisors is an integer number (35427048).

Almost surely, 2^2153869872 is an apocalyptic number.

2153869872 is a gapful number since it is divisible by the number (22) 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 2153869872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3542704800).

2153869872 is an abundant number, since it is smaller than the sum of its proper divisors (4931539728).

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

2153869872 is a wasteful number, since it uses less digits than its factorization.

2153869872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749 (or 1722 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 2153869872 is about 46409.8036194940. The cubic root of 2153869872 is about 1291.4367886454.

The spelling of 2153869872 in words is "two billion, one hundred fifty-three million, eight hundred sixty-nine thousand, eight hundred seventy-two".