2164947319 has 2 divisors, whose sum is σ = 2164947320. Its totient is φ = 2164947318.

The previous prime is 2164947307. The next prime is 2164947329. The reversal of 2164947319 is 9137494612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2164947319 - 2⁵ = 2164947287 is a prime.

It is a super-2 number, since 2×2164947319² = 9373993788090575522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164947329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082473659 + 1082473660.

It is an arithmetic number, because the mean of its divisors is an integer number (1082473660).

Almost surely, 2^2164947319 is an apocalyptic number.

2164947319 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164947319 is an equidigital number, since it uses as much as digits as its factorization.

2164947319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 2164947319 is about 46528.9943905948. The cubic root of 2164947319 is about 1293.6469759063.

The spelling of 2164947319 in words is "two billion, one hundred sixty-four million, nine hundred forty-seven thousand, three hundred nineteen".