195401856 has 96 divisors (see below), whose sum is σ = 562219920. Its totient is φ = 60103680.

The previous prime is 195401851. The next prime is 195401861. The reversal of 195401856 is 658104591.

It is an interprime number because it is at equal distance from previous prime (195401851) and next prime (195401861).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (195401851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63391 + ... + 66401.

Almost surely, 2^195401856 is an apocalyptic number.

195401856 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 195401856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281109960).

195401856 is an abundant number, since it is smaller than the sum of its proper divisors (366818064).

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

195401856 is a wasteful number, since it uses less digits than its factorization.

195401856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054 (or 3029 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 195401856 is about 13978.6213912531. The cubic root of 195401856 is about 580.2870715248.

The spelling of 195401856 in words is "one hundred ninety-five million, four hundred one thousand, eight hundred fifty-six".