194409930 has 64 divisors (see below), whose sum is σ = 548166528. Its totient is φ = 43503360.

The previous prime is 194409911. The next prime is 194409953. The reversal of 194409930 is 39904491.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18369 + ... + 26948.

It is an arithmetic number, because the mean of its divisors is an integer number (8565102).

Almost surely, 2^194409930 is an apocalyptic number.

194409930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194409930 is an abundant number, since it is smaller than the sum of its proper divisors (353756598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194409930 is a wasteful number, since it uses less digits than its factorization.

194409930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45351.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 194409930 is about 13943.0961411015. The cubic root of 194409930 is about 579.3034940827.

The spelling of 194409930 in words is "one hundred ninety-four million, four hundred nine thousand, nine hundred thirty".