1081159111 has 2 divisors, whose sum is σ = 1081159112. Its totient is φ = 1081159110.

The previous prime is 1081158997. The next prime is 1081159133. The reversal of 1081159111 is 1119511801.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1081159111 - 2⁷ = 1081158983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1081159111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081159141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540579555 + 540579556.

It is an arithmetic number, because the mean of its divisors is an integer number (540579556).

Almost surely, 2^1081159111 is an apocalyptic number.

1081159111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081159111 is an equidigital number, since it uses as much as digits as its factorization.

1081159111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 28.

The square root of 1081159111 is about 32880.9840333284. The cubic root of 1081159111 is about 1026.3524834268.

The spelling of 1081159111 in words is "one billion, eighty-one million, one hundred fifty-nine thousand, one hundred eleven".