2161850672 has 10 divisors (see below), whose sum is σ = 4188585708. Its totient is φ = 1080925328.

The previous prime is 2161850659. The next prime is 2161850699. The reversal of 2161850672 is 2760581612.

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 as a sum of consecutive naturals, namely, 67557818 + ... + 67557849.

Almost surely, 2^2161850672 is an apocalyptic number.

It is an amenable number.

2161850672 is a deficient number, since it is larger than the sum of its proper divisors (2026735036).

2161850672 is a wasteful number, since it uses less digits than its factorization.

2161850672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135115675 (or 135115669 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 2161850672 is about 46495.7059522705. The cubic root of 2161850672 is about 1293.0298893689.

The spelling of 2161850672 in words is "two billion, one hundred sixty-one million, eight hundred fifty thousand, six hundred seventy-two".