2161850733 has 24 divisors (see below), whose sum is σ = 3691833600. Its totient is φ = 1192744224.

The previous prime is 2161850711. The next prime is 2161850767. The reversal of 2161850733 is 3370581612.

2161850733 is a `hidden beast` number, since 2 + 1 + 618 + 5 + 0 + 7 + 33 = 666.

2161850733 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2161850733 - 2²⁹ = 1624979821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161850633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 589813 + ... + 593466.

It is an arithmetic number, because the mean of its divisors is an integer number (153826400).

Almost surely, 2^2161850733 is an apocalyptic number.

It is an amenable number.

2161850733 is a deficient number, since it is larger than the sum of its proper divisors (1529982867).

2161850733 is a wasteful number, since it uses less digits than its factorization.

2161850733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183321 (or 1183318 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 2161850733 is about 46495.7066082450. The cubic root of 2161850733 is about 1293.0299015305.

The spelling of 2161850733 in words is "two billion, one hundred sixty-one million, eight hundred fifty thousand, seven hundred thirty-three".