1115075681 has 2 divisors, whose sum is σ = 1115075682. Its totient is φ = 1115075680.

The previous prime is 1115075677. The next prime is 1115075737. The reversal of 1115075681 is 1865705111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 586075681 + 529000000 = 24209^2 + 23000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115075681 - 2² = 1115075677 is a prime.

It is a super-2 number, since 2×1115075681² = 2486787548715227522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1115075641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557537840 + 557537841.

It is an arithmetic number, because the mean of its divisors is an integer number (557537841).

Almost surely, 2^1115075681 is an apocalyptic number.

It is an amenable number.

1115075681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115075681 is an equidigital number, since it uses as much as digits as its factorization.

1115075681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 35.

The square root of 1115075681 is about 33392.7489284725. The cubic root of 1115075681 is about 1036.9745904247.

The spelling of 1115075681 in words is "one billion, one hundred fifteen million, seventy-five thousand, six hundred eighty-one".