195013823 has 4 divisors (see below), whose sum is σ = 195069360. Its totient is φ = 194958288.

The previous prime is 195013811. The next prime is 195013837. The reversal of 195013823 is 328310591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195013823 - 2⁴ = 195013807 is a prime.

It is a super-2 number, since 2×195013823² = 76060782322150658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195013823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195013843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22118 + ... + 29651.

It is an arithmetic number, because the mean of its divisors is an integer number (48767340).

Almost surely, 2^195013823 is an apocalyptic number.

195013823 is a deficient number, since it is larger than the sum of its proper divisors (55537).

195013823 is an equidigital number, since it uses as much as digits as its factorization.

195013823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55536.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 195013823 is about 13964.7349777932. The cubic root of 195013823 is about 579.9027016730.

The spelling of 195013823 in words is "one hundred ninety-five million, thirteen thousand, eight hundred twenty-three".