1151811245 has 8 divisors (see below), whose sum is σ = 1488494616. Its totient is φ = 850568256.

The previous prime is 1151811229. The next prime is 1151811247. The reversal of 1151811245 is 5421181511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11195716 + 1140615529 = 3346^2 + 33773^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1151811245 - 2⁴ = 1151811229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151811247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8860022 + ... + 8860151.

It is an arithmetic number, because the mean of its divisors is an integer number (186061827).

Almost surely, 2^1151811245 is an apocalyptic number.

It is an amenable number.

1151811245 is a deficient number, since it is larger than the sum of its proper divisors (336683371).

1151811245 is a wasteful number, since it uses less digits than its factorization.

1151811245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17720191.

The product of its digits is 1600, while the sum is 29.

The square root of 1151811245 is about 33938.3447592837. The cubic root of 1151811245 is about 1048.2393001532.

Adding to 1151811245 its reverse (5421181511), we get a palindrome (6572992756).

The spelling of 1151811245 in words is "one billion, one hundred fifty-one million, eight hundred eleven thousand, two hundred forty-five".