2191432319 has 2 divisors, whose sum is σ = 2191432320. Its totient is φ = 2191432318.

The previous prime is 2191432303. The next prime is 2191432343. The reversal of 2191432319 is 9132341912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2191432319 - 2⁴ = 2191432303 is a prime.

It is a super-2 number, since 2×2191432319² = 9604751217515435522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2191437319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095716159 + 1095716160.

It is an arithmetic number, because the mean of its divisors is an integer number (1095716160).

Almost surely, 2^2191432319 is an apocalyptic number.

2191432319 is a deficient number, since it is larger than the sum of its proper divisors (1).

2191432319 is an equidigital number, since it uses as much as digits as its factorization.

2191432319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 2191432319 is about 46812.7367176925. The cubic root of 2191432319 is about 1298.9009090975.

The spelling of 2191432319 in words is "two billion, one hundred ninety-one million, four hundred thirty-two thousand, three hundred nineteen".