1081180729 has 2 divisors, whose sum is σ = 1081180730. Its totient is φ = 1081180728.

The previous prime is 1081180703. The next prime is 1081180733. The reversal of 1081180729 is 9270811801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 901620729 + 179560000 = 30027^2 + 13400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081180729 - 2²⁵ = 1047626297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1081180759) 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 as a sum of consecutive naturals, namely, 540590364 + 540590365.

It is an arithmetic number, because the mean of its divisors is an integer number (540590365).

Almost surely, 2^1081180729 is an apocalyptic number.

It is an amenable number.

1081180729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081180729 is an equidigital number, since it uses as much as digits as its factorization.

1081180729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 37.

The square root of 1081180729 is about 32881.3127627228. The cubic root of 1081180729 is about 1026.3593240913.

The spelling of 1081180729 in words is "one billion, eighty-one million, one hundred eighty thousand, seven hundred twenty-nine".