1140438569 has 2 divisors, whose sum is σ = 1140438570. Its totient is φ = 1140438568.

The previous prime is 1140438547. The next prime is 1140438587. The reversal of 1140438569 is 9658340411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1116428569 + 24010000 = 33413^2 + 4900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140438569 - 2¹⁶ = 1140373033 is a prime.

It is a super-2 number, since 2×1140438569² = 2601200259325535522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1140438589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570219284 + 570219285.

It is an arithmetic number, because the mean of its divisors is an integer number (570219285).

Almost surely, 2^1140438569 is an apocalyptic number.

It is an amenable number.

1140438569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140438569 is an equidigital number, since it uses as much as digits as its factorization.

1140438569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1140438569 is about 33770.3800541244. The cubic root of 1140438569 is about 1044.7778711801. Note that the first 3 decimals are identical.

The spelling of 1140438569 in words is "one billion, one hundred forty million, four hundred thirty-eight thousand, five hundred sixty-nine".