195438878 has 16 divisors (see below), whose sum is σ = 305052480. Its totient is φ = 93833376.

The previous prime is 195438863. The next prime is 195438899. The reversal of 195438878 is 878834591.

195438878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

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, 14633 + ... + 24596.

It is an arithmetic number, because the mean of its divisors is an integer number (19065780).

Almost surely, 2^195438878 is an apocalyptic number.

195438878 is a deficient number, since it is larger than the sum of its proper divisors (109613602).

195438878 is a wasteful number, since it uses less digits than its factorization.

195438878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39331.

The product of its digits is 1935360, while the sum is 53.

The square root of 195438878 is about 13979.9455649870. The cubic root of 195438878 is about 580.3237174260.

The spelling of 195438878 in words is "one hundred ninety-five million, four hundred thirty-eight thousand, eight hundred seventy-eight".