19220133687 has 4 divisors (see below), whose sum is σ = 25626844920. Its totient is φ = 12813422456.

The previous prime is 19220133637. The next prime is 19220133769. The reversal of 19220133687 is 78633102291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78633102291 = 3 ⋅26211034097.

It is a cyclic number.

It is not a de Polignac number, because 19220133687 - 2⁶ = 19220133623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19220133607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3203355612 + ... + 3203355617.

It is an arithmetic number, because the mean of its divisors is an integer number (6406711230).

Almost surely, 2^19220133687 is an apocalyptic number.

19220133687 is a deficient number, since it is larger than the sum of its proper divisors (6406711233).

19220133687 is an equidigital number, since it uses as much as digits as its factorization.

19220133687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406711232.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 19220133687 in words is "nineteen billion, two hundred twenty million, one hundred thirty-three thousand, six hundred eighty-seven".