195915540 has 48 divisors (see below), whose sum is σ = 550791360. Its totient is φ = 52032000.

The previous prime is 195915521. The next prime is 195915547. The reversal of 195915540 is 45519591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195915547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8556 + ... + 21564.

It is an arithmetic number, because the mean of its divisors is an integer number (11474820).

Almost surely, 2^195915540 is an apocalyptic number.

195915540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195915540 is an abundant number, since it is smaller than the sum of its proper divisors (354875820).

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

195915540 is a wasteful number, since it uses less digits than its factorization.

195915540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13272 (or 13270 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 39.

The square root of 195915540 is about 13996.9832463999. The cubic root of 195915540 is about 580.7951242865.

The spelling of 195915540 in words is "one hundred ninety-five million, nine hundred fifteen thousand, five hundred forty".