19713858970 has 32 divisors (see below), whose sum is σ = 38220834960. Its totient is φ = 7277767680.

The previous prime is 19713858917. The next prime is 19713859003. The reversal of 19713858970 is 7985831791.

It can be written as a sum of positive squares in 8 ways, for example, as 13771521 + 19700087449 = 3711^2 + 140357^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1369410 + ... + 1383730.

Almost surely, 2^19713858970 is an apocalyptic number.

19713858970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19713858970 is a deficient number, since it is larger than the sum of its proper divisors (18506975990).

19713858970 is a wasteful number, since it uses less digits than its factorization.

19713858970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24930.

The product of its (nonzero) digits is 3810240, while the sum is 58.

The spelling of 19713858970 in words is "nineteen billion, seven hundred thirteen million, eight hundred fifty-eight thousand, nine hundred seventy".