19638382690019 has 16 divisors (see below), whose sum is σ = 20996851567104. Its totient is φ = 18322176206400.

The previous prime is 19638382689997. The next prime is 19638382690051. The reversal of 19638382690019 is 91009628383691.

It is not a de Polignac number, because 19638382690019 - 2³² = 19634087722723 is a prime.

It is a super-2 number, since 2×19638382690019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19638382690919) 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, 1727714 + ... + 6500904.

It is an arithmetic number, because the mean of its divisors is an integer number (1312303222944).

Almost surely, 2^{19638382690019} is an apocalyptic number.

19638382690019 is a deficient number, since it is larger than the sum of its proper divisors (1358468877085).

19638382690019 is a wasteful number, since it uses less digits than its factorization.

19638382690019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4777618.

The product of its (nonzero) digits is 30233088, while the sum is 65.

The spelling of 19638382690019 in words is "nineteen trillion, six hundred thirty-eight billion, three hundred eighty-two million, six hundred ninety thousand, nineteen".