1983366247 has 2 divisors, whose sum is σ = 1983366248. Its totient is φ = 1983366246.

The previous prime is 1983366211. The next prime is 1983366263. The reversal of 1983366247 is 7426633891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1983366247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1983366247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1983363247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991683123 + 991683124.

It is an arithmetic number, because the mean of its divisors is an integer number (991683124).

Almost surely, 2^1983366247 is an apocalyptic number.

1983366247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983366247 is an equidigital number, since it uses as much as digits as its factorization.

1983366247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The square root of 1983366247 is about 44535.0002469967. Note that the first 3 decimals coincide. The cubic root of 1983366247 is about 1256.4184523926.

The spelling of 1983366247 in words is "one billion, nine hundred eighty-three million, three hundred sixty-six thousand, two hundred forty-seven".