1987083863 has 2 divisors, whose sum is σ = 1987083864. Its totient is φ = 1987083862.

The previous prime is 1987083851. The next prime is 1987083929. The reversal of 1987083863 is 3683807891.

It is a weak prime.

It is an emirp because it is prime and its reverse (3683807891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1987083863 - 2¹⁴ = 1987067479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1987083823) 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 as a sum of consecutive naturals, namely, 993541931 + 993541932.

It is an arithmetic number, because the mean of its divisors is an integer number (993541932).

Almost surely, 2^1987083863 is an apocalyptic number.

1987083863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1987083863 is an equidigital number, since it uses as much as digits as its factorization.

1987083863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 1987083863 is about 44576.7188451550. The cubic root of 1987083863 is about 1257.2029714767.

The spelling of 1987083863 in words is "one billion, nine hundred eighty-seven million, eighty-three thousand, eight hundred sixty-three".