194549993220 has 96 divisors (see below), whose sum is σ = 600939077760. Its totient is φ = 46633692160.

The previous prime is 194549993219. The next prime is 194549993269. The reversal of 194549993220 is 22399945491.

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, 1597287 + ... + 1714766.

It is an arithmetic number, because the mean of its divisors is an integer number (6259782060).

Almost surely, 2^194549993220 is an apocalyptic number.

194549993220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194549993220 is an abundant number, since it is smaller than the sum of its proper divisors (406389084540).

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

194549993220 is a wasteful number, since it uses less digits than its factorization.

194549993220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312165 (or 3312163 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 57.

The spelling of 194549993220 in words is "one hundred ninety-four billion, five hundred forty-nine million, nine hundred ninety-three thousand, two hundred twenty".