1081154761 has 2 divisors, whose sum is σ = 1081154762. Its totient is φ = 1081154760.

The previous prime is 1081154749. The next prime is 1081154773. The reversal of 1081154761 is 1674511801.

It is a balanced prime because it is at equal distance from previous prime (1081154749) and next prime (1081154773).

It can be written as a sum of positive squares in only one way, i.e., 624050361 + 457104400 = 24981^2 + 21380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081154761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1081154731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540577380 + 540577381.

It is an arithmetic number, because the mean of its divisors is an integer number (540577381).

Almost surely, 2^1081154761 is an apocalyptic number.

It is an amenable number.

1081154761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081154761 is an equidigital number, since it uses as much as digits as its factorization.

1081154761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 34.

The square root of 1081154761 is about 32880.9178856065. The cubic root of 1081154761 is about 1026.3511069291.

The spelling of 1081154761 in words is "one billion, eighty-one million, one hundred fifty-four thousand, seven hundred sixty-one".