1999886693 has 8 divisors (see below), whose sum is σ = 2311266240. Its totient is φ = 1694927520.

The previous prime is 1999886677. The next prime is 1999886717. The reversal of 1999886693 is 3966889991.

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 1999886693 - 2⁴ = 1999886677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999886633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604423 + ... + 1605668.

It is an arithmetic number, because the mean of its divisors is an integer number (288908280).

Almost surely, 2^1999886693 is an apocalyptic number.

It is an amenable number.

1999886693 is a deficient number, since it is larger than the sum of its proper divisors (311379547).

1999886693 is an equidigital number, since it uses as much as digits as its factorization.

1999886693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210187.

The product of its digits is 45349632, while the sum is 68.

The square root of 1999886693 is about 44720.0927212813. The cubic root of 1999886693 is about 1259.8972564665.

The spelling of 1999886693 in words is "one billion, nine hundred ninety-nine million, eight hundred eighty-six thousand, six hundred ninety-three".