19982699907 has 4 divisors (see below), whose sum is σ = 26643599880. Its totient is φ = 13321799936.

The previous prime is 19982699899. The next prime is 19982699921. The reversal of 19982699907 is 70999628991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19982699907 - 2³ = 19982699899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19982699987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3330449982 + ... + 3330449987.

It is an arithmetic number, because the mean of its divisors is an integer number (6660899970).

Almost surely, 2^19982699907 is an apocalyptic number.

19982699907 is a deficient number, since it is larger than the sum of its proper divisors (6660899973).

19982699907 is an equidigital number, since it uses as much as digits as its factorization.

19982699907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660899972.

The product of its (nonzero) digits is 39680928, while the sum is 69.

The spelling of 19982699907 in words is "nineteen billion, nine hundred eighty-two million, six hundred ninety-nine thousand, nine hundred seven".