1986579481363 has 4 divisors (see below), whose sum is σ = 1996980421248. Its totient is φ = 1976178541480.

The previous prime is 1986579481349. The next prime is 1986579481417. The reversal of 1986579481363 is 3631849756891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1986579481363 - 2¹⁷ = 1986579350291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1986579481292 and 1986579481301.

It is not an unprimeable number, because it can be changed into a prime (1986579481463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5200469656 + ... + 5200470037.

It is an arithmetic number, because the mean of its divisors is an integer number (499245105312).

Almost surely, 2^{1986579481363} is an apocalyptic number.

1986579481363 is a deficient number, since it is larger than the sum of its proper divisors (10400939885).

1986579481363 is a wasteful number, since it uses less digits than its factorization.

1986579481363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10400939884.

The product of its digits is 235146240, while the sum is 70.

The spelling of 1986579481363 in words is "one trillion, nine hundred eighty-six billion, five hundred seventy-nine million, four hundred eighty-one thousand, three hundred sixty-three".