2154972150 has 72 divisors (see below), whose sum is σ = 5841065880. Its totient is φ = 569560320.

The previous prime is 2154972119. The next prime is 2154972163. The reversal of 2154972150 is 512794512.

2154972150 is a `hidden beast` number, since 2 + 15 + 497 + 2 + 150 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29661 + ... + 72039.

It is an arithmetic number, because the mean of its divisors is an integer number (81125915).

Almost surely, 2^2154972150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154972150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2920532940).

2154972150 is an abundant number, since it is smaller than the sum of its proper divisors (3686093730).

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

2154972150 is a wasteful number, since it uses less digits than its factorization.

2154972150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42510 (or 42502 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 2154972150 is about 46421.6775870929. The cubic root of 2154972150 is about 1291.6570556806.

The spelling of 2154972150 in words is "two billion, one hundred fifty-four million, nine hundred seventy-two thousand, one hundred fifty".