2172352819 has 24 divisors (see below), whose sum is σ = 2784732720. Its totient is φ = 1678791744.

The previous prime is 2172352813. The next prime is 2172352873. The reversal of 2172352819 is 9182532712.

It is not a de Polignac number, because 2172352819 - 2³ = 2172352811 is a prime.

It is a super-2 number, since 2×2172352819² = 9438233540434493522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2172352811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12264 + ... + 67045.

It is an arithmetic number, because the mean of its divisors is an integer number (116030530).

Almost surely, 2^2172352819 is an apocalyptic number.

2172352819 is a deficient number, since it is larger than the sum of its proper divisors (612379901).

2172352819 is a wasteful number, since it uses less digits than its factorization.

2172352819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79379 (or 79372 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 2172352819 is about 46608.5058653461. The cubic root of 2172352819 is about 1295.1203297002.

The spelling of 2172352819 in words is "two billion, one hundred seventy-two million, three hundred fifty-two thousand, eight hundred nineteen".