195139092 has 24 divisors (see below), whose sum is σ = 456129856. Its totient is φ = 64931328.

The previous prime is 195139081. The next prime is 195139093. The reversal of 195139092 is 290931591.

It is a self number, because there is not a number n which added to its sum of digits gives 195139092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195139093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7168 + ... + 21015.

Almost surely, 2^195139092 is an apocalyptic number.

195139092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

195139092 is an abundant number, since it is smaller than the sum of its proper divisors (260990764).

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

195139092 is a wasteful number, since it uses less digits than its factorization.

195139092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28767 (or 28765 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 195139092 is about 13969.2194484874. The cubic root of 195139092 is about 580.0268437833.

The spelling of 195139092 in words is "one hundred ninety-five million, one hundred thirty-nine thousand, ninety-two".