1266998093 has 2 divisors, whose sum is σ = 1266998094. Its totient is φ = 1266998092.

The previous prime is 1266998041. The next prime is 1266998099. The reversal of 1266998093 is 3908996621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1140615529 + 126382564 = 33773^2 + 11242^2 .

It is a cyclic number.

It is not a de Polignac number, because 1266998093 - 2¹⁸ = 1266735949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266998099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633499046 + 633499047.

It is an arithmetic number, because the mean of its divisors is an integer number (633499047).

Almost surely, 2^1266998093 is an apocalyptic number.

It is an amenable number.

1266998093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266998093 is an equidigital number, since it uses as much as digits as its factorization.

1266998093 is an evil number, because the sum of its binary digits is even.

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

The square root of 1266998093 is about 35594.9166735926. The cubic root of 1266998093 is about 1082.0782151733.

The spelling of 1266998093 in words is "one billion, two hundred sixty-six million, nine hundred ninety-eight thousand, ninety-three".