195516690 has 32 divisors (see below), whose sum is σ = 484379136. Its totient is φ = 50455680.

The previous prime is 195516667. The next prime is 195516697. The reversal of 195516690 is 96615591.

195516690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×195516690² = 76453552137112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (195516697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104187 + ... + 106046.

It is an arithmetic number, because the mean of its divisors is an integer number (15136848).

Almost surely, 2^195516690 is an apocalyptic number.

195516690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195516690 is an abundant number, since it is smaller than the sum of its proper divisors (288862446).

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

195516690 is a wasteful number, since it uses less digits than its factorization.

195516690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210274.

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 195516690 is about 13982.7282745536. The cubic root of 195516690 is about 580.4007238675.

The spelling of 195516690 in words is "one hundred ninety-five million, five hundred sixteen thousand, six hundred ninety".