195640442 has 16 divisors (see below), whose sum is σ = 303309312. Its totient is φ = 94545360.

The previous prime is 195640441. The next prime is 195640451. The reversal of 195640442 is 244046591.

195640442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (195640441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66323 + ... + 69209.

It is an arithmetic number, because the mean of its divisors is an integer number (18956832).

Almost surely, 2^195640442 is an apocalyptic number.

195640442 is a deficient number, since it is larger than the sum of its proper divisors (107668870).

195640442 is a wasteful number, since it uses less digits than its factorization.

195640442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 195640442 is about 13987.1527481471. The cubic root of 195640442 is about 580.5231526343.

The spelling of 195640442 in words is "one hundred ninety-five million, six hundred forty thousand, four hundred forty-two".