2151659952 has 120 divisors (see below), whose sum is σ = 6532307600. Its totient is φ = 657206784.

The previous prime is 2151659941. The next prime is 2151659989. The reversal of 2151659952 is 2599561512.

2151659952 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 6 + 599 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2151659898 and 2151659907.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256074 + ... + 264342.

Almost surely, 2^2151659952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151659952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3266153800).

2151659952 is an abundant number, since it is smaller than the sum of its proper divisors (4380647648).

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

2151659952 is a wasteful number, since it uses less digits than its factorization.

2151659952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8435 (or 8426 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 2151659952 is about 46385.9887466032. The cubic root of 2151659952 is about 1290.9949562237.

The spelling of 2151659952 in words is "two billion, one hundred fifty-one million, six hundred fifty-nine thousand, nine hundred fifty-two".