2152161630 has 64 divisors (see below), whose sum is σ = 5937019200. Its totient is φ = 554117760.

The previous prime is 2152161629. The next prime is 2152161677. The reversal of 2152161630 is 361612512.

2152161630 is a `hidden beast` number, since 2 + 1 + 5 + 21 + 6 + 1 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2152161594 and 2152161603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129601 + ... + 145260.

It is an arithmetic number, because the mean of its divisors is an integer number (92765925).

Almost surely, 2^2152161630 is an apocalyptic number.

2152161630 is an abundant number, since it is smaller than the sum of its proper divisors (3784857570).

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

2152161630 is a wasteful number, since it uses less digits than its factorization.

2152161630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274906 (or 274900 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2152161630 is about 46391.3960772900. The cubic root of 2152161630 is about 1291.0952839478.

The spelling of 2152161630 in words is "two billion, one hundred fifty-two million, one hundred sixty-one thousand, six hundred thirty".