2161850652 has 72 divisors (see below), whose sum is σ = 6044141376. Its totient is φ = 647201664.

The previous prime is 2161850651. The next prime is 2161850659. The reversal of 2161850652 is 2560581612.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161850651) 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, 45108 + ... + 79739.

It is an arithmetic number, because the mean of its divisors is an integer number (83946408).

Almost surely, 2^2161850652 is an apocalyptic number.

It is an amenable number.

2161850652 is an abundant number, since it is smaller than the sum of its proper divisors (3882290724).

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

2161850652 is a wasteful number, since it uses less digits than its factorization.

2161850652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124907 (or 124902 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 2161850652 is about 46495.7057371968. The cubic root of 2161850652 is about 1293.0298853815.

The spelling of 2161850652 in words is "two billion, one hundred sixty-one million, eight hundred fifty thousand, six hundred fifty-two".