19961931848 has 32 divisors (see below), whose sum is σ = 39406368000. Its totient is φ = 9453775680.

The previous prime is 19961931809. The next prime is 19961931851. The reversal of 19961931848 is 84813916991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028393 + ... + 1047623.

It is an arithmetic number, because the mean of its divisors is an integer number (1231449000).

Almost surely, 2^19961931848 is an apocalyptic number.

It is an amenable number.

19961931848 is a deficient number, since it is larger than the sum of its proper divisors (19444436152).

19961931848 is a wasteful number, since it uses less digits than its factorization.

19961931848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26085 (or 26081 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 59.

The spelling of 19961931848 in words is "nineteen billion, nine hundred sixty-one million, nine hundred thirty-one thousand, eight hundred forty-eight".