1140669197 has 2 divisors, whose sum is σ = 1140669198. Its totient is φ = 1140669196.

The previous prime is 1140669193. The next prime is 1140669227. The reversal of 1140669197 is 7919660411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 574752676 + 565916521 = 23974^2 + 23789^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140669197 - 2² = 1140669193 is a prime.

It is a super-2 number, since 2×1140669197² = 2602252433969249618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140669193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570334598 + 570334599.

It is an arithmetic number, because the mean of its divisors is an integer number (570334599).

Almost surely, 2^1140669197 is an apocalyptic number.

It is an amenable number.

1140669197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140669197 is an equidigital number, since it uses as much as digits as its factorization.

1140669197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 1140669197 is about 33773.7945306713. The cubic root of 1140669197 is about 1044.8482940264.

The spelling of 1140669197 in words is "one billion, one hundred forty million, six hundred sixty-nine thousand, one hundred ninety-seven".