1838365638219 has 48 divisors (see below), whose sum is σ = 2932459770240. Its totient is φ = 1100459627520.

The previous prime is 1838365638209. The next prime is 1838365638233. The reversal of 1838365638219 is 9128365638381.

1838365638219 is a `hidden beast` number, since 1 + 8 + 38 + 36 + 563 + 8 + 2 + 1 + 9 = 666.

It is not a de Polignac number, because 1838365638219 - 2⁴ = 1838365638203 is a prime.

It is a super-2 number, since 2×1838365638219² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1838365638209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35216632 + ... + 35268794.

It is an arithmetic number, because the mean of its divisors is an integer number (61092911880).

Almost surely, 2^{1838365638219} is an apocalyptic number.

1838365638219 is a deficient number, since it is larger than the sum of its proper divisors (1094094132021).

1838365638219 is a wasteful number, since it uses less digits than its factorization.

1838365638219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56552 (or 56549 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 1838365638219 in words is "one trillion, eight hundred thirty-eight billion, three hundred sixty-five million, six hundred thirty-eight thousand, two hundred nineteen".