195898923 has 24 divisors (see below), whose sum is σ = 309306816. Its totient is φ = 118489200.

The previous prime is 195898909. The next prime is 195899003. The reversal of 195898923 is 329898591.

It is not a de Polignac number, because 195898923 - 2⁵ = 195898891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195898923.

It is not an unprimeable number, because it can be changed into a prime (195898823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56428 + ... + 59798.

It is an arithmetic number, because the mean of its divisors is an integer number (12887784).

Almost surely, 2^195898923 is an apocalyptic number.

195898923 is a deficient number, since it is larger than the sum of its proper divisors (113407893).

195898923 is a wasteful number, since it uses less digits than its factorization.

195898923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975 (or 3972 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 195898923 is about 13996.3896416183. The cubic root of 195898923 is about 580.7787033576.

The spelling of 195898923 in words is "one hundred ninety-five million, eight hundred ninety-eight thousand, nine hundred twenty-three".