19160985 has 16 divisors (see below), whose sum is σ = 30712320. Its totient is φ = 10200960.

The previous prime is 19160971. The next prime is 19161029. The reversal of 19160985 is 58906191.

It is not a de Polignac number, because 19160985 - 2⁹ = 19160473 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 14221 + ... + 15509.

It is an arithmetic number, because the mean of its divisors is an integer number (1919520).

Almost surely, 2^19160985 is an apocalyptic number.

19160985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19160985 is a deficient number, since it is larger than the sum of its proper divisors (11551335).

19160985 is a wasteful number, since it uses less digits than its factorization.

19160985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 19160985 is about 4377.3262386987. The cubic root of 19160985 is about 267.5916825512.

The spelling of 19160985 in words is "nineteen million, one hundred sixty thousand, nine hundred eighty-five".