194940023 has 2 divisors, whose sum is σ = 194940024. Its totient is φ = 194940022.

The previous prime is 194939977. The next prime is 194940049. The reversal of 194940023 is 320049491.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194940023 - 2¹⁰ = 194938999 is a prime.

It is a super-2 number, since 2×194940023² = 76003225134481058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194940073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97470011 + 97470012.

It is an arithmetic number, because the mean of its divisors is an integer number (97470012).

Almost surely, 2^194940023 is an apocalyptic number.

194940023 is a deficient number, since it is larger than the sum of its proper divisors (1).

194940023 is an equidigital number, since it uses as much as digits as its factorization.

194940023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 194940023 is about 13962.0923575229. The cubic root of 194940023 is about 579.8295406727.

The spelling of 194940023 in words is "one hundred ninety-four million, nine hundred forty thousand, twenty-three".