195388650 has 72 divisors (see below), whose sum is σ = 555845004. Its totient is φ = 49036800.

The previous prime is 195388643. The next prime is 195388651. The reversal of 195388650 is 56883591.

It can be written as a sum of positive squares in 6 ways, for example, as 93721761 + 101666889 = 9681^2 + 10083^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 195388596 and 195388605.

It is not an unprimeable number, because it can be changed into a prime (195388651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5121 + ... + 20420.

Almost surely, 2^195388650 is an apocalyptic number.

195388650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195388650 is an abundant number, since it is smaller than the sum of its proper divisors (360456354).

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

195388650 is a wasteful number, since it uses less digits than its factorization.

195388650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25576 (or 25568 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 195388650 is about 13978.1490190941. The cubic root of 195388650 is about 580.2739985618.

The spelling of 195388650 in words is "one hundred ninety-five million, three hundred eighty-eight thousand, six hundred fifty".