19023668685 has 48 divisors (see below), whose sum is σ = 38396052864. Its totient is φ = 8532441216.

The previous prime is 19023668647. The next prime is 19023668689. The reversal of 19023668685 is 58686632091.

It is a happy number.

It is not a de Polignac number, because 19023668685 - 2⁷ = 19023668557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19023668689) 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 47 ways as a sum of consecutive naturals, for example, 553047 + ... + 586436.

It is an arithmetic number, because the mean of its divisors is an integer number (799917768).

Almost surely, 2^19023668685 is an apocalyptic number.

19023668685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19023668685 is an abundant number, since it is smaller than the sum of its proper divisors (19372384179).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19023668685 is a wasteful number, since it uses less digits than its factorization.

19023668685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139554 (or 1139551 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 19023668685 in words is "nineteen billion, twenty-three million, six hundred sixty-eight thousand, six hundred eighty-five".