195396993 has 24 divisors (see below), whose sum is σ = 310342656. Its totient is φ = 117482400.

The previous prime is 195396977. The next prime is 195397043. The reversal of 195396993 is 399693591.

It is a happy number.

195396993 is a `hidden beast` number, since 19 + 539 + 6 + 9 + 93 = 666.

It is not a de Polignac number, because 195396993 - 2⁴ = 195396977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195396953) 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, 4803 + ... + 20343.

It is an arithmetic number, because the mean of its divisors is an integer number (12930944).

Almost surely, 2^195396993 is an apocalyptic number.

It is an amenable number.

195396993 is a deficient number, since it is larger than the sum of its proper divisors (114945663).

195396993 is a wasteful number, since it uses less digits than its factorization.

195396993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15685 (or 15682 counting only the distinct ones).

The product of its digits is 1771470, while the sum is 54.

The square root of 195396993 is about 13978.4474459791. The cubic root of 195396993 is about 580.2822575831.

The spelling of 195396993 in words is "one hundred ninety-five million, three hundred ninety-six thousand, nine hundred ninety-three".