19884135039 has 4 divisors (see below), whose sum is σ = 26512180056. Its totient is φ = 13256090024.

The previous prime is 19884134993. The next prime is 19884135083. The reversal of 19884135039 is 93053148891.

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

It is a cyclic number.

It is not a de Polignac number, because 19884135039 - 2⁹ = 19884134527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19884134982 and 19884135000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19884135839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3314022504 + ... + 3314022509.

It is an arithmetic number, because the mean of its divisors is an integer number (6628045014).

Almost surely, 2^19884135039 is an apocalyptic number.

19884135039 is a deficient number, since it is larger than the sum of its proper divisors (6628045017).

19884135039 is an equidigital number, since it uses as much as digits as its factorization.

19884135039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6628045016.

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 19884135039 in words is "nineteen billion, eight hundred eighty-four million, one hundred thirty-five thousand, thirty-nine".