2156797962 has 32 divisors (see below), whose sum is σ = 5228602560. Its totient is φ = 653574960.

The previous prime is 2156797931. The next prime is 2156797963. The reversal of 2156797962 is 2697976512.

2156797962 is a `hidden beast` number, since 2 + 1 + 567 + 9 + 79 + 6 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2156797899 and 2156797908.

It is not an unprimeable number, because it can be changed into a prime (2156797963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1814893 + ... + 1816080.

It is an arithmetic number, because the mean of its divisors is an integer number (163393830).

Almost surely, 2^2156797962 is an apocalyptic number.

2156797962 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2156797962 is an abundant number, since it is smaller than the sum of its proper divisors (3071804598).

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

2156797962 is a wasteful number, since it uses less digits than its factorization.

2156797962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3630995 (or 3630989 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 2156797962 is about 46441.3389341866. The cubic root of 2156797962 is about 1292.0217405531.

The spelling of 2156797962 in words is "two billion, one hundred fifty-six million, seven hundred ninety-seven thousand, nine hundred sixty-two".