1130497681 has 4 divisors (see below), whose sum is σ = 1130608612. Its totient is φ = 1130386752.

The previous prime is 1130497661. The next prime is 1130497723. The reversal of 1130497681 is 1867940311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1867940311 = 35111 ⋅53201.

It can be written as a sum of positive squares in 2 ways, for example, as 645617281 + 484880400 = 25409^2 + 22020^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130497681 - 2²⁵ = 1096943249 is a prime.

It is a super-2 number, since 2×1130497681² = 2556050013492755522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1130497661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38436 + ... + 61141.

It is an arithmetic number, because the mean of its divisors is an integer number (282652153).

Almost surely, 2^1130497681 is an apocalyptic number.

It is an amenable number.

1130497681 is a deficient number, since it is larger than the sum of its proper divisors (110931).

1130497681 is an equidigital number, since it uses as much as digits as its factorization.

1130497681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110930.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 1130497681 is about 33622.8743714751. The cubic root of 1130497681 is about 1041.7333277816.

The spelling of 1130497681 in words is "one billion, one hundred thirty million, four hundred ninety-seven thousand, six hundred eighty-one".