195011380 has 24 divisors (see below), whose sum is σ = 417253032. Its totient is φ = 76532352.

The previous prime is 195011363. The next prime is 195011381. The reversal of 195011380 is 83110591.

It can be written as a sum of positive squares in 4 ways, for example, as 15397776 + 179613604 = 3924^2 + 13402^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195011381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90927 + ... + 93046.

It is an arithmetic number, because the mean of its divisors is an integer number (17385543).

Almost surely, 2^195011380 is an apocalyptic number.

195011380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195011380 is an abundant number, since it is smaller than the sum of its proper divisors (222241652).

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

195011380 is a wasteful number, since it uses less digits than its factorization.

195011380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184035 (or 184033 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 195011380 is about 13964.6475071876. The cubic root of 195011380 is about 579.9002801212.

The spelling of 195011380 in words is "one hundred ninety-five million, eleven thousand, three hundred eighty".