19832023891 has 2 divisors, whose sum is σ = 19832023892. Its totient is φ = 19832023890.

The previous prime is 19832023879. The next prime is 19832023921.

19832023891 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 19832023891 - 2⁷ = 19832023763 is a prime.

It is a super-2 number, since 2×19832023891² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19832023801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9916011945 + 9916011946.

It is an arithmetic number, because the mean of its divisors is an integer number (9916011946).

Almost surely, 2^19832023891 is an apocalyptic number.

19832023891 is a deficient number, since it is larger than the sum of its proper divisors (1).

19832023891 is an equidigital number, since it uses as much as digits as its factorization.

19832023891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 19832023891 in words is "nineteen billion, eight hundred thirty-two million, twenty-three thousand, eight hundred ninety-one".