195873138 has 24 divisors (see below), whose sum is σ = 428597676. Its totient is φ = 64644000.

The previous prime is 195873103. The next prime is 195873149. The reversal of 195873138 is 831378591.

195873138 is a `hidden beast` number, since 1 + 9 + 587 + 31 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 143209089 + 52664049 = 11967^2 + 7257^2 .

It is a junction number, because it is equal to n+sod(n) for n = 195873093 and 195873102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52053 + ... + 55688.

Almost surely, 2^195873138 is an apocalyptic number.

195873138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

195873138 is an abundant number, since it is smaller than the sum of its proper divisors (232724538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195873138 is a wasteful number, since it uses less digits than its factorization.

195873138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107850 (or 107847 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 195873138 is about 13995.4684809048. The cubic root of 195873138 is about 580.7532207674.

The spelling of 195873138 in words is "one hundred ninety-five million, eight hundred seventy-three thousand, one hundred thirty-eight".