1081439011 has 2 divisors, whose sum is σ = 1081439012. Its totient is φ = 1081439010.

The previous prime is 1081438993. The next prime is 1081439053. The reversal of 1081439011 is 1109341801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1081439011 - 2²¹ = 1079341859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1081439081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540719505 + 540719506.

It is an arithmetic number, because the mean of its divisors is an integer number (540719506).

Almost surely, 2^1081439011 is an apocalyptic number.

1081439011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081439011 is an equidigital number, since it uses as much as digits as its factorization.

1081439011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1081439011 is about 32885.2400173695. The cubic root of 1081439011 is about 1026.4410461770.

The spelling of 1081439011 in words is "one billion, eighty-one million, four hundred thirty-nine thousand, eleven".