19324991085 has 32 divisors (see below), whose sum is σ = 31149930240. Its totient is φ = 10230297600.

The previous prime is 19324991057. The next prime is 19324991117. The reversal of 19324991085 is 58019942391.

It is not a de Polignac number, because 19324991085 - 2⁷ = 19324990957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1115671 + ... + 1132859.

It is an arithmetic number, because the mean of its divisors is an integer number (973435320).

Almost surely, 2^19324991085 is an apocalyptic number.

19324991085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19324991085 is a deficient number, since it is larger than the sum of its proper divisors (11824939155).

19324991085 is a wasteful number, since it uses less digits than its factorization.

19324991085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17749.

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 19324991085 in words is "nineteen billion, three hundred twenty-four million, nine hundred ninety-one thousand, eighty-five".