19713634386 has 16 divisors (see below), whose sum is σ = 39457131168. Its totient is φ = 6566234400.

The previous prime is 19713634337. The next prime is 19713634387. The reversal of 19713634386 is 68343631791.

It is not an unprimeable number, because it can be changed into a prime (19713634387) by changing a digit.

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, 1235680 + ... + 1251531.

It is an arithmetic number, because the mean of its divisors is an integer number (2466070698).

Almost surely, 2^19713634386 is an apocalyptic number.

19713634386 is an abundant number, since it is smaller than the sum of its proper divisors (19743496782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19713634386 is a wasteful number, since it uses less digits than its factorization.

19713634386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488537.

The product of its digits is 1959552, while the sum is 51.

The spelling of 19713634386 in words is "nineteen billion, seven hundred thirteen million, six hundred thirty-four thousand, three hundred eighty-six".