2161934692 has 12 divisors (see below), whose sum is σ = 3797773056. Its totient is φ = 1076856680.

The previous prime is 2161934681. The next prime is 2161934701. The reversal of 2161934692 is 2964391612.

It is a super-2 number, since 2×2161934692² = 9347923224946269728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026484 + ... + 1028587.

It is an arithmetic number, because the mean of its divisors is an integer number (316481088).

Almost surely, 2^2161934692 is an apocalyptic number.

It is an amenable number.

2161934692 is a deficient number, since it is larger than the sum of its proper divisors (1635838364).

2161934692 is a wasteful number, since it uses less digits than its factorization.

2161934692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055338 (or 2055336 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 2161934692 is about 46496.6094677881. The cubic root of 2161934692 is about 1293.0466402891.

The spelling of 2161934692 in words is "two billion, one hundred sixty-one million, nine hundred thirty-four thousand, six hundred ninety-two".