195277980 has 48 divisors (see below), whose sum is σ = 578944800. Its totient is φ = 49010688.

The previous prime is 195277949. The next prime is 195277987. The reversal of 195277980 is 89772591.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195277987) 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, 94705 + ... + 96744.

It is an arithmetic number, because the mean of its divisors is an integer number (12061350).

Almost surely, 2^195277980 is an apocalyptic number.

195277980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195277980 is an abundant number, since it is smaller than the sum of its proper divisors (383666820).

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

195277980 is a wasteful number, since it uses less digits than its factorization.

195277980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191478 (or 191476 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 195277980 is about 13974.1897797332. The cubic root of 195277980 is about 580.1644202897.

The spelling of 195277980 in words is "one hundred ninety-five million, two hundred seventy-seven thousand, nine hundred eighty".