1181361056 has 12 divisors (see below), whose sum is σ = 2325804642. Its totient is φ = 590680512.

The previous prime is 1181361037. The next prime is 1181361067. The reversal of 1181361056 is 6501631811.

It can be written as a sum of positive squares in only one way, i.e., 1098259600 + 83101456 = 33140^2 + 9116^2 .

It is a super-2 number, since 2×1181361056² = 2791227889266870272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 36917533 = 1181361056 / (1 + 1 + 8 + 1 + 3 + 6 + 1 + 0 + 5 + 6).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18458735 + ... + 18458798.

Almost surely, 2^1181361056 is an apocalyptic number.

1181361056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1181361056 is a deficient number, since it is larger than the sum of its proper divisors (1144443586).

1181361056 is an equidigital number, since it uses as much as digits as its factorization.

1181361056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36917543 (or 36917535 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1181361056 is about 34370.9333012649. The cubic root of 1181361056 is about 1057.1279365942.

Adding to 1181361056 its reverse (6501631811), we get a palindrome (7682992867).

The spelling of 1181361056 in words is "one billion, one hundred eighty-one million, three hundred sixty-one thousand, fifty-six".