19220487907 has 4 divisors (see below), whose sum is σ = 19221359400. Its totient is φ = 19219616416.

The previous prime is 19220487893. The next prime is 19220487973. The reversal of 19220487907 is 70978402291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70978402291 = 167 ⋅425020373.

It is a cyclic number.

It is not a de Polignac number, because 19220487907 - 2¹¹ = 19220485859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19220487007) 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, 401782 + ... + 447067.

It is an arithmetic number, because the mean of its divisors is an integer number (4805339850).

Almost surely, 2^19220487907 is an apocalyptic number.

19220487907 is a deficient number, since it is larger than the sum of its proper divisors (871493).

19220487907 is an equidigital number, since it uses as much as digits as its factorization.

19220487907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871492.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 19220487907 in words is "nineteen billion, two hundred twenty million, four hundred eighty-seven thousand, nine hundred seven".