19424510985 has 32 divisors (see below), whose sum is σ = 33975521280. Its totient is φ = 9398244800.

The previous prime is 19424510969. The next prime is 19424510993. The reversal of 19424510985 is 58901542491.

It is not a de Polignac number, because 19424510985 - 2⁴ = 19424510969 is a prime.

It is a Curzon 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, 43851 + ... + 201920.

It is an arithmetic number, because the mean of its divisors is an integer number (1061735040).

Almost surely, 2^19424510985 is an apocalyptic number.

19424510985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19424510985 is a deficient number, since it is larger than the sum of its proper divisors (14551010295).

19424510985 is a wasteful number, since it uses less digits than its factorization.

19424510985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246269.

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 19424510985 in words is "nineteen billion, four hundred twenty-four million, five hundred ten thousand, nine hundred eighty-five".