19340988386 has 16 divisors (see below), whose sum is σ = 30065810040. Its totient is φ = 9320250240.

The previous prime is 19340988379. The next prime is 19340988437. The reversal of 19340988386 is 68388904391.

It can be written as a sum of positive squares in 4 ways, for example, as 16671716161 + 2669272225 = 129119^2 + 51665^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267035 + ... + 331646.

Almost surely, 2^19340988386 is an apocalyptic number.

19340988386 is a deficient number, since it is larger than the sum of its proper divisors (10724821654).

19340988386 is a wasteful number, since it uses less digits than its factorization.

19340988386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599269.

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 19340988386 in words is "nineteen billion, three hundred forty million, nine hundred eighty-eight thousand, three hundred eighty-six".