2164091473 has 2 divisors, whose sum is σ = 2164091474. Its totient is φ = 2164091472.

The previous prime is 2164091443. The next prime is 2164091509. The reversal of 2164091473 is 3741904612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1962224209 + 201867264 = 44297^2 + 14208^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164091473 - 2⁵ = 2164091441 is a prime.

It is a super-2 number, since 2×2164091473² = 9366583807022619458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2164091443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082045736 + 1082045737.

It is an arithmetic number, because the mean of its divisors is an integer number (1082045737).

Almost surely, 2^2164091473 is an apocalyptic number.

It is an amenable number.

2164091473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164091473 is an equidigital number, since it uses as much as digits as its factorization.

2164091473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 2164091473 is about 46519.7965709224. The cubic root of 2164091473 is about 1293.4764854581.

The spelling of 2164091473 in words is "two billion, one hundred sixty-four million, ninety-one thousand, four hundred seventy-three".