2151964108 has 96 divisors (see below), whose sum is σ = 4673894400. Its totient is φ = 846084096.

The previous prime is 2151964097. The next prime is 2151964147. The reversal of 2151964108 is 8014691512.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3346435 + ... + 3347077.

It is an arithmetic number, because the mean of its divisors is an integer number (48686400).

Almost surely, 2^2151964108 is an apocalyptic number.

2151964108 is a gapful number since it is divisible by the number (28) 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 2151964108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2336947200).

2151964108 is an abundant number, since it is smaller than the sum of its proper divisors (2521930292).

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

2151964108 is a wasteful number, since it uses less digits than its factorization.

2151964108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 2151964108 is about 46389.2671638602. The cubic root of 2151964108 is about 1291.0557845097.

The spelling of 2151964108 in words is "two billion, one hundred fifty-one million, nine hundred sixty-four thousand, one hundred eight".