19985045308 has 12 divisors (see below), whose sum is σ = 34974862720. Its totient is φ = 9992227392.

The previous prime is 19985045233. The next prime is 19985045321. The reversal of 19985045308 is 80354058991.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162628 + ... + 257716.

Almost surely, 2^19985045308 is an apocalyptic number.

It is an amenable number.

19985045308 is a deficient number, since it is larger than the sum of its proper divisors (14989817412).

19985045308 is a wasteful number, since it uses less digits than its factorization.

19985045308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147636 (or 147634 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 19985045308 in words is "nineteen billion, nine hundred eighty-five million, forty-five thousand, three hundred eight".