190319985 has 24 divisors (see below), whose sum is σ = 330220800. Its totient is φ = 101401632.

The previous prime is 190319959. The next prime is 190319993. The reversal of 190319985 is 589913091.

It is not a de Polignac number, because 190319985 - 2⁸ = 190319729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 190319985.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69166 + ... + 71864.

It is an arithmetic number, because the mean of its divisors is an integer number (13759200).

Almost surely, 2^190319985 is an apocalyptic number.

190319985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190319985 is a deficient number, since it is larger than the sum of its proper divisors (139900815).

190319985 is a wasteful number, since it uses less digits than its factorization.

190319985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277 (or 4274 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The square root of 190319985 is about 13795.6509451348. The cubic root of 190319985 is about 575.2122568611.

The spelling of 190319985 in words is "one hundred ninety million, three hundred nineteen thousand, nine hundred eighty-five".