19688057386 has 16 divisors (see below), whose sum is σ = 30360188160. Its totient is φ = 9570769200.

The previous prime is 19688057381. The next prime is 19688057407. The reversal of 19688057386 is 68375088691.

It is not an unprimeable number, because it can be changed into a prime (19688057381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679341 + ... + 707728.

It is an arithmetic number, because the mean of its divisors is an integer number (1897511760).

Almost surely, 2^19688057386 is an apocalyptic number.

19688057386 is a deficient number, since it is larger than the sum of its proper divisors (10672130774).

19688057386 is a wasteful number, since it uses less digits than its factorization.

19688057386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387269.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 19688057386 in words is "nineteen billion, six hundred eighty-eight million, fifty-seven thousand, three hundred eighty-six".