1140678265 has 16 divisors (see below), whose sum is σ = 1379700432. Its totient is φ = 905313024.

The previous prime is 1140678251. The next prime is 1140678269. The reversal of 1140678265 is 5628760411.

It can be written as a sum of positive squares in 8 ways, for example, as 486290704 + 654387561 = 22052^2 + 25581^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140678265 - 2²⁵ = 1107123833 is a prime.

It is a super-2 number, since 2×1140678265² = 2602293808486820450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140678269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389587 + ... + 392503.

It is an arithmetic number, because the mean of its divisors is an integer number (86231277).

Almost surely, 2^1140678265 is an apocalyptic number.

It is an amenable number.

1140678265 is a deficient number, since it is larger than the sum of its proper divisors (239022167).

1140678265 is a wasteful number, since it uses less digits than its factorization.

1140678265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1140678265 is about 33773.9287764986. The cubic root of 1140678265 is about 1044.8510627693.

The spelling of 1140678265 in words is "one billion, one hundred forty million, six hundred seventy-eight thousand, two hundred sixty-five".