195490806 has 16 divisors (see below), whose sum is σ = 446836224. Its totient is φ = 55854504.

The previous prime is 195490781. The next prime is 195490817. The reversal of 195490806 is 608094591.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 4654543 = 195490806 / (1 + 9 + 5 + 4 + 9 + 0 + 8 + 0 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2327230 + ... + 2327313.

It is an arithmetic number, because the mean of its divisors is an integer number (27927264).

Almost surely, 2^195490806 is an apocalyptic number.

195490806 is an abundant number, since it is smaller than the sum of its proper divisors (251345418).

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

195490806 is a wasteful number, since it uses less digits than its factorization.

195490806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654555.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 195490806 is about 13981.8026734753. The cubic root of 195490806 is about 580.3751101031.

The spelling of 195490806 in words is "one hundred ninety-five million, four hundred ninety thousand, eight hundred six".