195981594 has 24 divisors (see below), whose sum is σ = 405955680. Its totient is φ = 63072912.

The previous prime is 195981589. The next prime is 195981601. The reversal of 195981594 is 495189591.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14374 + ... + 24465.

It is an arithmetic number, because the mean of its divisors is an integer number (16914820).

Almost surely, 2^195981594 is an apocalyptic number.

195981594 is an abundant number, since it is smaller than the sum of its proper divisors (209974086).

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

195981594 is a wasteful number, since it uses less digits than its factorization.

195981594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38902 (or 38873 counting only the distinct ones).

The product of its digits is 583200, while the sum is 51.

The square root of 195981594 is about 13999.3426274236. The cubic root of 195981594 is about 580.8603897072.

The spelling of 195981594 in words is "one hundred ninety-five million, nine hundred eighty-one thousand, five hundred ninety-four".