194939880 has 64 divisors (see below), whose sum is σ = 585748800. Its totient is φ = 51901440.

The previous prime is 194939863. The next prime is 194939887. The reversal of 194939880 is 88939491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (194939887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130176 + ... + 131664.

It is an arithmetic number, because the mean of its divisors is an integer number (9152325).

Almost surely, 2^194939880 is an apocalyptic number.

194939880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194939880 is an abundant number, since it is smaller than the sum of its proper divisors (390808920).

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

194939880 is a wasteful number, since it uses less digits than its factorization.

194939880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594 (or 2590 counting only the distinct ones).

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

The square root of 194939880 is about 13962.0872365130. The cubic root of 194939880 is about 579.8293988929.

The spelling of 194939880 in words is "one hundred ninety-four million, nine hundred thirty-nine thousand, eight hundred eighty".