195139570 has 8 divisors (see below), whose sum is σ = 351251244. Its totient is φ = 78055824.

The previous prime is 195139561. The next prime is 195139573. The reversal of 195139570 is 75931591.

It can be written as a sum of positive squares in 2 ways, for example, as 160199649 + 34939921 = 12657^2 + 5911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (195139573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9756969 + ... + 9756988.

Almost surely, 2^195139570 is an apocalyptic number.

195139570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195139570 is a deficient number, since it is larger than the sum of its proper divisors (156111674).

195139570 is a wasteful number, since it uses less digits than its factorization.

195139570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19513964.

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 195139570 is about 13969.2365575217. The cubic root of 195139570 is about 580.0273173816.

The spelling of 195139570 in words is "one hundred ninety-five million, one hundred thirty-nine thousand, five hundred seventy".