19985246910 has 64 divisors (see below), whose sum is σ = 53546722560. Its totient is φ = 5304126240.

The previous prime is 19985246891. The next prime is 19985246959. The reversal of 19985246910 is 1964258991.

19985246910 is a `hidden beast` number, since 1 + 99 + 85 + 2 + 469 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 118432 + ... + 232371.

It is an arithmetic number, because the mean of its divisors is an integer number (836667540).

Almost surely, 2^19985246910 is an apocalyptic number.

19985246910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19985246910 is an abundant number, since it is smaller than the sum of its proper divisors (33561475650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19985246910 is a wasteful number, since it uses less digits than its factorization.

19985246910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351030 (or 351024 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 19985246910 in words is "nineteen billion, nine hundred eighty-five million, two hundred forty-six thousand, nine hundred ten".