1986314399 has 2 divisors, whose sum is σ = 1986314400. Its totient is φ = 1986314398.

The previous prime is 1986314383. The next prime is 1986314411. The reversal of 1986314399 is 9934136891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1986314399 - 2⁴ = 1986314383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1986314399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1986314599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 993157199 + 993157200.

It is an arithmetic number, because the mean of its divisors is an integer number (993157200).

Almost surely, 2^1986314399 is an apocalyptic number.

1986314399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1986314399 is an equidigital number, since it uses as much as digits as its factorization.

1986314399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 53.

The square root of 1986314399 is about 44568.0872261756. The cubic root of 1986314399 is about 1257.0406737937.

The spelling of 1986314399 in words is "one billion, nine hundred eighty-six million, three hundred fourteen thousand, three hundred ninety-nine".