195400656 has 120 divisors (see below), whose sum is σ = 600050880. Its totient is φ = 58867200.

The previous prime is 195400649. The next prime is 195400661. The reversal of 195400656 is 656004591.

195400656 is a `hidden beast` number, since 195 + 400 + 65 + 6 = 666.

195400656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 195400656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 444885 + ... + 445323.

It is an arithmetic number, because the mean of its divisors is an integer number (5000424).

Almost surely, 2^195400656 is an apocalyptic number.

195400656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195400656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300025440).

195400656 is an abundant number, since it is smaller than the sum of its proper divisors (404650224).

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

195400656 is a wasteful number, since it uses less digits than its factorization.

195400656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 195400656 is about 13978.5784684996. The cubic root of 195400656 is about 580.2858836379.

The spelling of 195400656 in words is "one hundred ninety-five million, four hundred thousand, six hundred fifty-six".