1151842561 has 16 divisors (see below), whose sum is σ = 1231569360. Its totient is φ = 1075271680.

The previous prime is 1151842547. The next prime is 1151842577. The reversal of 1151842561 is 1652481511.

It can be written as a sum of positive squares in 8 ways, for example, as 462465025 + 689377536 = 21505^2 + 26256^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151842561 - 2¹⁵ = 1151809793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151842501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130071 + ... + 138643.

It is an arithmetic number, because the mean of its divisors is an integer number (76973085).

Almost surely, 2^1151842561 is an apocalyptic number.

It is an amenable number.

1151842561 is a deficient number, since it is larger than the sum of its proper divisors (79726799).

1151842561 is a wasteful number, since it uses less digits than its factorization.

1151842561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8756.

The product of its digits is 9600, while the sum is 34.

The square root of 1151842561 is about 33938.8061221959. The cubic root of 1151842561 is about 1048.2488000791.

The spelling of 1151842561 in words is "one billion, one hundred fifty-one million, eight hundred forty-two thousand, five hundred sixty-one".