19000000039 has 4 divisors (see below), whose sum is σ = 19000276120. Its totient is φ = 18999723960.

The previous prime is 19000000031. The next prime is 19000000049. The reversal of 19000000039 is 93000000091.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 19000000039 - 2³ = 19000000031 is a prime.

It is a super-2 number, since 2×19000000039² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18999999956 and 19000000019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19000000031) 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, 57892 + ... + 203350.

It is an arithmetic number, because the mean of its divisors is an integer number (4750069030).

Almost surely, 2^19000000039 is an apocalyptic number.

19000000039 is a deficient number, since it is larger than the sum of its proper divisors (276081).

19000000039 is a wasteful number, since it uses less digits than its factorization.

19000000039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276080.

The product of its (nonzero) digits is 243, while the sum is 22.

The spelling of 19000000039 in words is "nineteen billion, thirty-nine", and thus it is an aban number and an uban number.