194893890 has 32 divisors (see below), whose sum is σ = 468861696. Its totient is φ = 51847680.

The previous prime is 194893861. The next prime is 194893901. The reversal of 194893890 is 98398491.

It is a happy number.

194893890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5394 + ... + 20466.

It is an arithmetic number, because the mean of its divisors is an integer number (14651928).

Almost surely, 2^194893890 is an apocalyptic number.

194893890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194893890 is an abundant number, since it is smaller than the sum of its proper divisors (273967806).

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

194893890 is a wasteful number, since it uses less digits than its factorization.

194893890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15514.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 194893890 is about 13960.4401793067. The cubic root of 194893890 is about 579.7837977374.

The spelling of 194893890 in words is "one hundred ninety-four million, eight hundred ninety-three thousand, eight hundred ninety".