1140668989 has 2 divisors, whose sum is σ = 1140668990. Its totient is φ = 1140668988.

The previous prime is 1140668983. The next prime is 1140669001. The reversal of 1140668989 is 9898660411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 759443364 + 381225625 = 27558^2 + 19525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140668989 - 2⁵ = 1140668957 is a prime.

It is a super-2 number, since 2×1140668989² = 2602251484932564242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140668983) 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, 570334494 + 570334495.

It is an arithmetic number, because the mean of its divisors is an integer number (570334495).

Almost surely, 2^1140668989 is an apocalyptic number.

It is an amenable number.

1140668989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140668989 is an equidigital number, since it uses as much as digits as its factorization.

1140668989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 1140668989 is about 33773.7914513606. The cubic root of 1140668989 is about 1044.8482305173.

The spelling of 1140668989 in words is "one billion, one hundred forty million, six hundred sixty-eight thousand, nine hundred eighty-nine".