1998676727 has 2 divisors, whose sum is σ = 1998676728. Its totient is φ = 1998676726.

The previous prime is 1998676663. The next prime is 1998676741. The reversal of 1998676727 is 7276768991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1998676727 - 2⁶ = 1998676663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1998676727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1998676777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999338363 + 999338364.

It is an arithmetic number, because the mean of its divisors is an integer number (999338364).

Almost surely, 2^1998676727 is an apocalyptic number.

1998676727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1998676727 is an equidigital number, since it uses as much as digits as its factorization.

1998676727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16003008, while the sum is 62.

The square root of 1998676727 is about 44706.5624601132. The cubic root of 1998676727 is about 1259.6431186715.

The spelling of 1998676727 in words is "one billion, nine hundred ninety-eight million, six hundred seventy-six thousand, seven hundred twenty-seven".