195777894 has 32 divisors (see below), whose sum is σ = 423005184. Its totient is φ = 60049440.

The previous prime is 195777887. The next prime is 195777917. The reversal of 195777894 is 498777591.

It is a Curzon number.

It is a congruent number.

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, 22027 + ... + 29609.

It is an arithmetic number, because the mean of its divisors is an integer number (13218912).

Almost surely, 2^195777894 is an apocalyptic number.

195777894 is an abundant number, since it is smaller than the sum of its proper divisors (227227290).

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

195777894 is a wasteful number, since it uses less digits than its factorization.

195777894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7932.

The product of its digits is 4445280, while the sum is 57.

The square root of 195777894 is about 13992.0653943583. The cubic root of 195777894 is about 580.6590744095.

The spelling of 195777894 in words is "one hundred ninety-five million, seven hundred seventy-seven thousand, eight hundred ninety-four".