195616990 has 16 divisors (see below), whose sum is σ = 355742352. Its totient is φ = 77439744.

The previous prime is 195616969. The next prime is 195616997. The reversal of 195616990 is 99616591.

It is a self number, because there is not a number n which added to its sum of digits gives 195616990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195616997) 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, 99864 + ... + 101803.

It is an arithmetic number, because the mean of its divisors is an integer number (22233897).

Almost surely, 2^195616990 is an apocalyptic number.

195616990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195616990 is a deficient number, since it is larger than the sum of its proper divisors (160125362).

195616990 is a wasteful number, since it uses less digits than its factorization.

195616990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201771.

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 195616990 is about 13986.3143822810. The cubic root of 195616990 is about 580.4999553634.

The spelling of 195616990 in words is "one hundred ninety-five million, six hundred sixteen thousand, nine hundred ninety".