1998676741 has 2 divisors, whose sum is σ = 1998676742. Its totient is φ = 1998676740.

The previous prime is 1998676727. The next prime is 1998676763. The reversal of 1998676741 is 1476768991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1642599841 + 356076900 = 40529^2 + 18870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1998676741 - 2¹⁷ = 1998545669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1998076741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999338370 + 999338371.

It is an arithmetic number, because the mean of its divisors is an integer number (999338371).

Almost surely, 2^1998676741 is an apocalyptic number.

It is an amenable number.

1998676741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1998676741 is an equidigital number, since it uses as much as digits as its factorization.

1998676741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 58.

The square root of 1998676741 is about 44706.5626166897. The cubic root of 1998676741 is about 1259.6431216126.

The spelling of 1998676741 in words is "one billion, nine hundred ninety-eight million, six hundred seventy-six thousand, seven hundred forty-one".