2172789830 has 16 divisors (see below), whose sum is σ = 3930878160. Its totient is φ = 864703392.

The previous prime is 2172789811. The next prime is 2172789847. The reversal of 2172789830 is 389872712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549500 + ... + 553439.

It is an arithmetic number, because the mean of its divisors is an integer number (245679885).

Almost surely, 2^2172789830 is an apocalyptic number.

2172789830 is a deficient number, since it is larger than the sum of its proper divisors (1758088330).

2172789830 is a wasteful number, since it uses less digits than its factorization.

2172789830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103143.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 2172789830 is about 46613.1937331052. The cubic root of 2172789830 is about 1295.2071700877.

The spelling of 2172789830 in words is "two billion, one hundred seventy-two million, seven hundred eighty-nine thousand, eight hundred thirty".