2161850700 has 72 divisors (see below), whose sum is σ = 6260224320. Its totient is φ = 576008000.

The previous prime is 2161850699. The next prime is 2161850711. The reversal of 2161850700 is 70581612.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 483475 + ... + 487925.

It is an arithmetic number, because the mean of its divisors is an integer number (86947560).

Almost surely, 2^2161850700 is an apocalyptic number.

2161850700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2161850700 is an abundant number, since it is smaller than the sum of its proper divisors (4098373620).

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

2161850700 is a wasteful number, since it uses less digits than its factorization.

2161850700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6087 (or 6080 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 2161850700 is about 46495.7062533735. The cubic root of 2161850700 is about 1293.0298949513.

The spelling of 2161850700 in words is "two billion, one hundred sixty-one million, eight hundred fifty thousand, seven hundred".