2161794628 has 24 divisors (see below), whose sum is σ = 4333075712. Its totient is φ = 924450624.

The previous prime is 2161794601. The next prime is 2161794637. The reversal of 2161794628 is 8264971612.

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 7 ways as a sum of consecutive naturals, for example, 71676 + ... + 97267.

Almost surely, 2^2161794628 is an apocalyptic number.

2161794628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2161794628 is an abundant number, since it is smaller than the sum of its proper divisors (2171281084).

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

2161794628 is a wasteful number, since it uses less digits than its factorization.

2161794628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169411 (or 169409 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 2161794628 is about 46495.1032690540. The cubic root of 2161794628 is about 1293.0187157336.

The spelling of 2161794628 in words is "two billion, one hundred sixty-one million, seven hundred ninety-four thousand, six hundred twenty-eight".