195723951 has 16 divisors (see below), whose sum is σ = 276382464. Its totient is φ = 122943744.

The previous prime is 195723949. The next prime is 195723953. The reversal of 195723951 is 159327591.

It is an interprime number because it is at equal distance from previous prime (195723949) and next prime (195723953).

It is not a de Polignac number, because 195723951 - 2¹ = 195723949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195723953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16546 + ... + 25791.

It is an arithmetic number, because the mean of its divisors is an integer number (17273904).

Almost surely, 2^195723951 is an apocalyptic number.

195723951 is a deficient number, since it is larger than the sum of its proper divisors (80658513).

195723951 is a wasteful number, since it uses less digits than its factorization.

195723951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42430.

The product of its digits is 85050, while the sum is 42.

The square root of 195723951 is about 13990.1376333473. The cubic root of 195723951 is about 580.6057395326.

The spelling of 195723951 in words is "one hundred ninety-five million, seven hundred twenty-three thousand, nine hundred fifty-one".