2151180984 has 64 divisors (see below), whose sum is σ = 5623914240. Its totient is φ = 684400640.

The previous prime is 2151180979. The next prime is 2151181033. The reversal of 2151180984 is 4890811512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267064 + ... + 275000.

It is an arithmetic number, because the mean of its divisors is an integer number (87873660).

Almost surely, 2^2151180984 is an apocalyptic number.

2151180984 is a gapful number since it is divisible by the number (24) 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 2151180984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2811957120).

2151180984 is an abundant number, since it is smaller than the sum of its proper divisors (3472733256).

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

2151180984 is a wasteful number, since it uses less digits than its factorization.

2151180984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460 (or 8456 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 2151180984 is about 46380.8256071407. The cubic root of 2151180984 is about 1290.8991555901.

The spelling of 2151180984 in words is "two billion, one hundred fifty-one million, one hundred eighty thousand, nine hundred eighty-four".