1140545449 has 2 divisors, whose sum is σ = 1140545450. Its totient is φ = 1140545448.

The previous prime is 1140545389. The next prime is 1140545473. The reversal of 1140545449 is 9445450411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 658435600 + 482109849 = 25660^2 + 21957^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140545449 - 2¹⁷ = 1140414377 is a prime.

It is a super-2 number, since 2×1140545449² = 2601687842469223202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1140515449) 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, 570272724 + 570272725.

It is an arithmetic number, because the mean of its divisors is an integer number (570272725).

Almost surely, 2^1140545449 is an apocalyptic number.

It is an amenable number.

1140545449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140545449 is an equidigital number, since it uses as much as digits as its factorization.

1140545449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 1140545449 is about 33771.9624688883. The cubic root of 1140545449 is about 1044.8105084402.

The spelling of 1140545449 in words is "one billion, one hundred forty million, five hundred forty-five thousand, four hundred forty-nine".