1140663465 has 20 divisors (see below), whose sum is σ = 2044745604. Its totient is φ = 608353632.

The previous prime is 1140663457. The next prime is 1140663473. The reversal of 1140663465 is 5643660411.

It is a happy number.

1140663465 is a `hidden beast` number, since 1 + 14 + 0 + 6 + 634 + 6 + 5 = 666.

1140663465 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1140663457) and next prime (1140663473).

It can be written as a sum of positive squares in 2 ways, for example, as 390615696 + 750047769 = 19764^2 + 27387^2 .

It is not a de Polignac number, because 1140663465 - 2³ = 1140663457 is a prime.

It is a super-2 number, since 2×1140663465² = 2602226280771612450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1407822 + ... + 1408631.

Almost surely, 2^1140663465 is an apocalyptic number.

1140663465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1140663465 is a deficient number, since it is larger than the sum of its proper divisors (904082139).

1140663465 is an equidigital number, since it uses as much as digits as its factorization.

1140663465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816470 (or 2816461 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1140663465 is about 33773.7096718735. The cubic root of 1140663465 is about 1044.8465438606.

The spelling of 1140663465 in words is "one billion, one hundred forty million, six hundred sixty-three thousand, four hundred sixty-five".