190307985 has 16 divisors (see below), whose sum is σ = 347991936. Its totient is φ = 86997888.

The previous prime is 190307963. The next prime is 190307987. The reversal of 190307985 is 589703091.

It is a happy number.

It is not a de Polignac number, because 190307985 - 2¹¹ = 190305937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (190307987) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 906124 + ... + 906333.

It is an arithmetic number, because the mean of its divisors is an integer number (21749496).

Almost surely, 2^190307985 is an apocalyptic number.

190307985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190307985 is a deficient number, since it is larger than the sum of its proper divisors (157683951).

190307985 is a wasteful number, since it uses less digits than its factorization.

190307985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812472.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 190307985 is about 13795.2160186059. The cubic root of 190307985 is about 575.2001672353.

The spelling of 190307985 in words is "one hundred ninety million, three hundred seven thousand, nine hundred eighty-five".