19138664343 has 16 divisors (see below), whose sum is σ = 26863361280. Its totient is φ = 12096357504.

The previous prime is 19138664341. The next prime is 19138664359. The reversal of 19138664343 is 34346683191.

It is not a de Polignac number, because 19138664343 - 2¹ = 19138664341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19138664292 and 19138664301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19138664341) 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, 1219513 + ... + 1235106.

It is an arithmetic number, because the mean of its divisors is an integer number (1678960080).

Almost surely, 2^19138664343 is an apocalyptic number.

19138664343 is a deficient number, since it is larger than the sum of its proper divisors (7724696937).

19138664343 is a wasteful number, since it uses less digits than its factorization.

19138664343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454758.

The product of its digits is 1119744, while the sum is 48.

The spelling of 19138664343 in words is "nineteen billion, one hundred thirty-eight million, six hundred sixty-four thousand, three hundred forty-three".