1986986943299 has 2 divisors, whose sum is σ = 1986986943300. Its totient is φ = 1986986943298.

The previous prime is 1986986943239. The next prime is 1986986943301. The reversal of 1986986943299 is 9923496896891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1986986943299 - 2⁸ = 1986986943043 is a prime.

It is a super-2 number, since 2×1986986943299² (a number of 25 digits) contains 22 as substring.

Together with 1986986943301, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1986986943209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993493471649 + 993493471650.

It is an arithmetic number, because the mean of its divisors is an integer number (993493471650).

Almost surely, 2^{1986986943299} is an apocalyptic number.

1986986943299 is a deficient number, since it is larger than the sum of its proper divisors (1).

1986986943299 is an equidigital number, since it uses as much as digits as its factorization.

1986986943299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265173504, while the sum is 83.

The spelling of 1986986943299 in words is "one trillion, nine hundred eighty-six billion, nine hundred eighty-six million, nine hundred forty-three thousand, two hundred ninety-nine".