194097780620 has 24 divisors (see below), whose sum is σ = 425327311584. Its totient is φ = 74263498496.

The previous prime is 194097780589. The next prime is 194097780637. The reversal of 194097780620 is 26087790491.

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, 210975389 + ... + 210976308.

It is an arithmetic number, because the mean of its divisors is an integer number (17721971316).

Almost surely, 2^194097780620 is an apocalyptic number.

194097780620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194097780620 is an abundant number, since it is smaller than the sum of its proper divisors (231229530964).

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

194097780620 is a wasteful number, since it uses less digits than its factorization.

194097780620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421951729 (or 421951727 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 194097780620 in words is "one hundred ninety-four billion, ninety-seven million, seven hundred eighty thousand, six hundred twenty".