19138514084645 has 16 divisors (see below), whose sum is σ = 23460207966720. Its totient is φ = 14983811294784.

The previous prime is 19138514084609. The next prime is 19138514084647. The reversal of 19138514084645 is 54648041583191.

It is a cyclic number.

It is not a de Polignac number, because 19138514084645 - 2¹⁰ = 19138514083621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19138514084647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145396814 + ... + 145528383.

It is an arithmetic number, because the mean of its divisors is an integer number (1466262997920).

Almost surely, 2^{19138514084645} is an apocalyptic number.

It is an amenable number.

19138514084645 is a deficient number, since it is larger than the sum of its proper divisors (4321693882075).

19138514084645 is a wasteful number, since it uses less digits than its factorization.

19138514084645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290925484.

The product of its (nonzero) digits is 16588800, while the sum is 59.

The spelling of 19138514084645 in words is "nineteen trillion, one hundred thirty-eight billion, five hundred fourteen million, eighty-four thousand, six hundred forty-five".