195778894 has 8 divisors (see below), whose sum is σ = 293820408. Its totient is φ = 97838760.

The previous prime is 195778889. The next prime is 195778901. The reversal of 195778894 is 498877591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20317 + ... + 28360.

It is an arithmetic number, because the mean of its divisors is an integer number (36727551).

Almost surely, 2^195778894 is an apocalyptic number.

195778894 is a deficient number, since it is larger than the sum of its proper divisors (98041514).

195778894 is a wasteful number, since it uses less digits than its factorization.

195778894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50690.

The product of its digits is 5080320, while the sum is 58.

The square root of 195778894 is about 13992.1011288512. The cubic root of 195778894 is about 580.6600630436.

The spelling of 195778894 in words is "one hundred ninety-five million, seven hundred seventy-eight thousand, eight hundred ninety-four".