2191298434 has 16 divisors (see below), whose sum is σ = 3635461368. Its totient is φ = 984033792.

The previous prime is 2191298429. The next prime is 2191298477. The reversal of 2191298434 is 4348921912.

It can be written as a sum of positive squares in 4 ways, for example, as 2043311209 + 147987225 = 45203^2 + 12165^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1137967 + ... + 1139890.

Almost surely, 2^2191298434 is an apocalyptic number.

2191298434 is a deficient number, since it is larger than the sum of its proper divisors (1444162934).

2191298434 is a wasteful number, since it uses less digits than its factorization.

2191298434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277909.

The product of its digits is 124416, while the sum is 43.

The square root of 2191298434 is about 46811.3066897304. The cubic root of 2191298434 is about 1298.8744565520.

The spelling of 2191298434 in words is "two billion, one hundred ninety-one million, two hundred ninety-eight thousand, four hundred thirty-four".