194423930 has 16 divisors (see below), whose sum is σ = 350169480. Its totient is φ = 77723712.

The previous prime is 194423923. The next prime is 194423947. The reversal of 194423930 is 39324491.

It can be written as a sum of positive squares in 4 ways, for example, as 55160329 + 139263601 = 7427^2 + 11801^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15992 + ... + 25388.

Almost surely, 2^194423930 is an apocalyptic number.

194423930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194423930 is a deficient number, since it is larger than the sum of its proper divisors (155745550).

194423930 is a wasteful number, since it uses less digits than its factorization.

194423930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 194423930 is about 13943.5981726382. The cubic root of 194423930 is about 579.3173995011.

The spelling of 194423930 in words is "one hundred ninety-four million, four hundred twenty-three thousand, nine hundred thirty".