195779136 has 224 divisors, whose sum is σ = 632553472. Its totient is φ = 52254720.

The previous prime is 195779113. The next prime is 195779149. The reversal of 195779136 is 631977591.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1541505 + ... + 1541631.

Almost surely, 2^195779136 is an apocalyptic number.

195779136 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 195779136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316276736).

195779136 is an abundant number, since it is smaller than the sum of its proper divisors (436774336).

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

195779136 is a wasteful number, since it uses less digits than its factorization.

195779136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 207 counting only the distinct ones).

The product of its digits is 357210, while the sum is 48.

The square root of 195779136 is about 13992.1097765848. The cubic root of 195779136 is about 580.6603022926.

The spelling of 195779136 in words is "one hundred ninety-five million, seven hundred seventy-nine thousand, one hundred thirty-six".