195269993638 has 8 divisors (see below), whose sum is σ = 310134695832. Its totient is φ = 91891761696.

The previous prime is 195269993593. The next prime is 195269993663. The reversal of 195269993638 is 836399962591.

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, 2871617520 + ... + 2871617587.

It is an arithmetic number, because the mean of its divisors is an integer number (38766836979).

Almost surely, 2^195269993638 is an apocalyptic number.

195269993638 is a deficient number, since it is larger than the sum of its proper divisors (114864702194).

195269993638 is a wasteful number, since it uses less digits than its factorization.

195269993638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743235126.

The product of its digits is 170061120, while the sum is 70.

The spelling of 195269993638 in words is "one hundred ninety-five billion, two hundred sixty-nine million, nine hundred ninety-three thousand, six hundred thirty-eight".