2151975960 has 96 divisors (see below), whose sum is σ = 7125945840. Its totient is φ = 563027712.

The previous prime is 2151975941. The next prime is 2151975961. The reversal of 2151975960 is 695791512.

2151975960 is a `hidden beast` number, since 2 + 1 + 51 + 9 + 7 + 596 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151975961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37314 + ... + 75473.

Almost surely, 2^2151975960 is an apocalyptic number.

2151975960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151975960 is an abundant number, since it is smaller than the sum of its proper divisors (4973969880).

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

2151975960 is a wasteful number, since it uses less digits than its factorization.

2151975960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112857 (or 112850 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 45.

The square root of 2151975960 is about 46389.3949087504. The cubic root of 2151975960 is about 1291.0581546802.

It can be divided in two parts, 21519 and 75960, that added together give a palindrome (97479).

The spelling of 2151975960 in words is "two billion, one hundred fifty-one million, nine hundred seventy-five thousand, nine hundred sixty".