1182268561 has 8 divisors (see below), whose sum is σ = 1193263400. Its totient is φ = 1171317888.

The previous prime is 1182268547. The next prime is 1182268567. The reversal of 1182268561 is 1658622811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 378886225 + 803382336 = 19465^2 + 28344^2 .

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 1182268561 - 2²³ = 1173879953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1182268567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44005 + ... + 65581.

It is an arithmetic number, because the mean of its divisors is an integer number (149157925).

Almost surely, 2^1182268561 is an apocalyptic number.

It is an amenable number.

1182268561 is a deficient number, since it is larger than the sum of its proper divisors (10994839).

1182268561 is a wasteful number, since it uses less digits than its factorization.

1182268561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22083.

The product of its digits is 46080, while the sum is 40.

The square root of 1182268561 is about 34384.1324014435. The cubic root of 1182268561 is about 1057.3985575967.

The spelling of 1182268561 in words is "one billion, one hundred eighty-two million, two hundred sixty-eight thousand, five hundred sixty-one".