1805386000139 has 8 divisors (see below), whose sum is σ = 1869254553600. Its totient is φ = 1741869340200.

The previous prime is 1805386000129. The next prime is 1805386000141. The reversal of 1805386000139 is 9310006835081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1805386000139 - 2⁴ = 1805386000123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1805386000139.

It is not an unprimeable number, because it can be changed into a prime (1805386000129) 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, 87962939 + ... + 87983460.

It is an arithmetic number, because the mean of its divisors is an integer number (233656819200).

Almost surely, 2^{1805386000139} is an apocalyptic number.

1805386000139 is a deficient number, since it is larger than the sum of its proper divisors (63868553461).

1805386000139 is a wasteful number, since it uses less digits than its factorization.

1805386000139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175946761.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 1805386000139 in words is "one trillion, eight hundred five billion, three hundred eighty-six million, one hundred thirty-nine", and thus it is an aban number.