19579950907 has 4 divisors (see below), whose sum is σ = 21359946456. Its totient is φ = 17799955360.

The previous prime is 19579950877. The next prime is 19579950917. The reversal of 19579950907 is 70905997591.

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

It is not a de Polignac number, because 19579950907 - 2¹⁹ = 19579426619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19579950917) by changing a digit.

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, 889997758 + ... + 889997779.

It is an arithmetic number, because the mean of its divisors is an integer number (5339986614).

Almost surely, 2^19579950907 is an apocalyptic number.

19579950907 is a deficient number, since it is larger than the sum of its proper divisors (1779995549).

19579950907 is a wasteful number, since it uses less digits than its factorization.

19579950907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779995548.

The product of its (nonzero) digits is 8037225, while the sum is 61.

The spelling of 19579950907 in words is "nineteen billion, five hundred seventy-nine million, nine hundred fifty thousand, nine hundred seven".