194400023 has 2 divisors, whose sum is σ = 194400024. Its totient is φ = 194400022.

The previous prime is 194399987. The next prime is 194400067. The reversal of 194400023 is 320004491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194400023 - 2²⁴ = 177622807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194400223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97200011 + 97200012.

It is an arithmetic number, because the mean of its divisors is an integer number (97200012).

Almost surely, 2^194400023 is an apocalyptic number.

194400023 is a deficient number, since it is larger than the sum of its proper divisors (1).

194400023 is an equidigital number, since it uses as much as digits as its factorization.

194400023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 194400023 is about 13942.7408711487. The cubic root of 194400023 is about 579.2936536093.

The spelling of 194400023 in words is "one hundred ninety-four million, four hundred thousand, twenty-three".