1140718869 has 20 divisors (see below), whose sum is σ = 1705226380. Its totient is φ = 759948480.

The previous prime is 1140718867. The next prime is 1140718871. The reversal of 1140718869 is 9688170411.

It is a happy number.

1140718869 is a `hidden beast` number, since 1 + 1 + 407 + 188 + 69 = 666.

It is an interprime number because it is at equal distance from previous prime (1140718867) and next prime (1140718871).

It can be written as a sum of positive squares in 2 ways, for example, as 5904900 + 1134813969 = 2430^2 + 33687^2 .

It is not a de Polignac number, because 1140718869 - 2¹ = 1140718867 is a prime.

It is a super-2 number, since 2×1140718869² = 2602479076185278322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140718867) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136977 + ... + 145065.

It is an arithmetic number, because the mean of its divisors is an integer number (85261319).

Almost surely, 2^1140718869 is an apocalyptic number.

It is an amenable number.

1140718869 is a deficient number, since it is larger than the sum of its proper divisors (564507511).

1140718869 is an equidigital number, since it uses as much as digits as its factorization.

1140718869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9842 (or 9833 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 1140718869 is about 33774.5298856994. The cubic root of 1140718869 is about 1044.8634602555.

It can be divided in two parts, 11407 and 18869, that added together give a square (30276 = 174²).

The spelling of 1140718869 in words is "one billion, one hundred forty million, seven hundred eighteen thousand, eight hundred sixty-nine".