195145590 has 16 divisors (see below), whose sum is σ = 468349488. Its totient is φ = 52038816.

The previous prime is 195145541. The next prime is 195145603. The reversal of 195145590 is 95541591.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3252397 + ... + 3252456.

It is an arithmetic number, because the mean of its divisors is an integer number (29271843).

Almost surely, 2^195145590 is an apocalyptic number.

195145590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195145590 is an abundant number, since it is smaller than the sum of its proper divisors (273203898).

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

195145590 is a wasteful number, since it uses less digits than its factorization.

195145590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6504863.

The product of its (nonzero) digits is 40500, while the sum is 39.

The square root of 195145590 is about 13969.4520293389. The cubic root of 195145590 is about 580.0332818793.

The spelling of 195145590 in words is "one hundred ninety-five million, one hundred forty-five thousand, five hundred ninety".