1838405615706 has 80 divisors (see below), whose sum is σ = 4510104999840. Its totient is φ = 555081297120.

The previous prime is 1838405615693. The next prime is 1838405615743. The reversal of 1838405615706 is 6075165048381.

It is a happy number.

1838405615706 is a `hidden beast` number, since 1 + 8 + 3 + 8 + 4 + 0 + 5 + 61 + 570 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1368576 + ... + 2355803.

It is an arithmetic number, because the mean of its divisors is an integer number (56376312498).

Almost surely, 2^{1838405615706} is an apocalyptic number.

1838405615706 is an abundant number, since it is smaller than the sum of its proper divisors (2671699384134).

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

1838405615706 is a wasteful number, since it uses less digits than its factorization.

1838405615706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724681 (or 3724672 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 1838405615706 in words is "one trillion, eight hundred thirty-eight billion, four hundred five million, six hundred fifteen thousand, seven hundred six".