19472839339 has 16 divisors (see below), whose sum is σ = 20900436480. Its totient is φ = 18086047200.

The previous prime is 19472839333. The next prime is 19472839349. The reversal of 19472839339 is 93393827491.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19472839339 - 2⁵ = 19472839307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19472839333) 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, 1454494 + ... + 1467820.

It is an arithmetic number, because the mean of its divisors is an integer number (1306277280).

Almost surely, 2^19472839339 is an apocalyptic number.

19472839339 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

19472839339 is a deficient number, since it is larger than the sum of its proper divisors (1427597141).

19472839339 is a wasteful number, since it uses less digits than its factorization.

19472839339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14850.

The product of its digits is 8817984, while the sum is 58.

The spelling of 19472839339 in words is "nineteen billion, four hundred seventy-two million, eight hundred thirty-nine thousand, three hundred thirty-nine".