2190870591 has 16 divisors (see below), whose sum is σ = 3595275264. Its totient is φ = 1155623904.

The previous prime is 2190870559. The next prime is 2190870599. The reversal of 2190870591 is 1950780912.

It is not a de Polignac number, because 2190870591 - 2⁵ = 2190870559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190870599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4012311 + ... + 4012856.

It is an arithmetic number, because the mean of its divisors is an integer number (224704704).

Almost surely, 2^2190870591 is an apocalyptic number.

2190870591 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2190870591 is a deficient number, since it is larger than the sum of its proper divisors (1404404673).

2190870591 is a wasteful number, since it uses less digits than its factorization.

2190870591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8025190.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 2190870591 is about 46806.7365984855. The cubic root of 2190870591 is about 1298.7899175550.

The spelling of 2190870591 in words is "two billion, one hundred ninety million, eight hundred seventy thousand, five hundred ninety-one".