1081241761 has 2 divisors, whose sum is σ = 1081241762. Its totient is φ = 1081241760.

The previous prime is 1081241731. The next prime is 1081241809. The reversal of 1081241761 is 1671421801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 996601761 + 84640000 = 31569^2 + 9200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081241761 - 2²¹ = 1079144609 is a prime.

It is a super-2 number, since 2×1081241761² = 2338167491460762242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1081241731) 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, 540620880 + 540620881.

It is an arithmetic number, because the mean of its divisors is an integer number (540620881).

Almost surely, 2^1081241761 is an apocalyptic number.

It is an amenable number.

1081241761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081241761 is an equidigital number, since it uses as much as digits as its factorization.

1081241761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 1081241761 is about 32882.2408147620. The cubic root of 1081241761 is about 1026.3786361828.

The spelling of 1081241761 in words is "one billion, eighty-one million, two hundred forty-one thousand, seven hundred sixty-one".