19139071839 has 16 divisors (see below), whose sum is σ = 26292405600. Its totient is φ = 12377970176.

The previous prime is 19139071823. The next prime is 19139071867. The reversal of 19139071839 is 93817093191.

It is a cyclic number.

It is not a de Polignac number, because 19139071839 - 2⁴ = 19139071823 is a prime.

It is a super-3 number, since 3×19139071839³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19139071791 and 19139071800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19139071879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 662094 + ... + 690395.

It is an arithmetic number, because the mean of its divisors is an integer number (1643275350).

Almost surely, 2^19139071839 is an apocalyptic number.

19139071839 is a deficient number, since it is larger than the sum of its proper divisors (7153333761).

19139071839 is a wasteful number, since it uses less digits than its factorization.

19139071839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352634.

The product of its (nonzero) digits is 367416, while the sum is 51.

The spelling of 19139071839 in words is "nineteen billion, one hundred thirty-nine million, seventy-one thousand, eight hundred thirty-nine".