23164891 has 2 divisors, whose sum is σ = 23164892. Its totient is φ = 23164890.

The previous prime is 23164847. The next prime is 23164901. The reversal of 23164891 is 19846132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23164891 - 2¹⁷ = 23033819 is a prime.

It is a super-2 number, since 2×23164891² = 1073224350083762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23164291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11582445 + 11582446.

It is an arithmetic number, because the mean of its divisors is an integer number (11582446).

Almost surely, 2^23164891 is an apocalyptic number.

23164891 is a deficient number, since it is larger than the sum of its proper divisors (1).

23164891 is an equidigital number, since it uses as much as digits as its factorization.

23164891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 23164891 is about 4812.9918969390. The cubic root of 23164891 is about 285.0646862507.

The spelling of 23164891 in words is "twenty-three million, one hundred sixty-four thousand, eight hundred ninety-one".