194981923 has 4 divisors (see below), whose sum is σ = 195019528. Its totient is φ = 194944320.

The previous prime is 194981903. The next prime is 194981929. The reversal of 194981923 is 329189491.

It is a happy number.

194981923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 194981923 - 2²⁵ = 161427491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194981929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9486 + ... + 21907.

It is an arithmetic number, because the mean of its divisors is an integer number (48754882).

Almost surely, 2^194981923 is an apocalyptic number.

194981923 is a deficient number, since it is larger than the sum of its proper divisors (37605).

194981923 is an equidigital number, since it uses as much as digits as its factorization.

194981923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37604.

The product of its digits is 139968, while the sum is 46.

The square root of 194981923 is about 13963.5927683387. The cubic root of 194981923 is about 579.8710801454.

The spelling of 194981923 in words is "one hundred ninety-four million, nine hundred eighty-one thousand, nine hundred twenty-three".