1081136811 has 16 divisors (see below), whose sum is σ = 1575548928. Its totient is φ = 656476800.

The previous prime is 1081136747. The next prime is 1081136821. The reversal of 1081136811 is 1186311801.

It is not a de Polignac number, because 1081136811 - 2⁶ = 1081136747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081136821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340335 + ... + 343496.

It is an arithmetic number, because the mean of its divisors is an integer number (98471808).

Almost surely, 2^1081136811 is an apocalyptic number.

1081136811 is a deficient number, since it is larger than the sum of its proper divisors (494412117).

1081136811 is a wasteful number, since it uses less digits than its factorization.

1081136811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683882.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 1081136811 is about 32880.6449298063. The cubic root of 1081136811 is about 1026.3454268590.

The spelling of 1081136811 in words is "one billion, eighty-one million, one hundred thirty-six thousand, eight hundred eleven".