195135880 has 16 divisors (see below), whose sum is σ = 439055820. Its totient is φ = 78054336.

The previous prime is 195135859. The next prime is 195135893. The reversal of 195135880 is 88531591.

It can be written as a sum of positive squares in 2 ways, for example, as 189172516 + 5963364 = 13754^2 + 2442^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 4878397 = 195135880 / (1 + 9 + 5 + 1 + 3 + 5 + 8 + 8 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2439159 + ... + 2439238.

Almost surely, 2^195135880 is an apocalyptic number.

195135880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195135880 is an abundant number, since it is smaller than the sum of its proper divisors (243919940).

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

195135880 is a wasteful number, since it uses less digits than its factorization.

195135880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878408 (or 4878404 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 40.

The square root of 195135880 is about 13969.1044809608. The cubic root of 195135880 is about 580.0236613415.

The spelling of 195135880 in words is "one hundred ninety-five million, one hundred thirty-five thousand, eight hundred eighty".