1089409011 has 16 divisors (see below), whose sum is σ = 1567011744. Its totient is φ = 670651904.

The previous prime is 1089408989. The next prime is 1089409021. The reversal of 1089409011 is 1109049801.

It is not a de Polignac number, because 1089409011 - 2⁷ = 1089408883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1089409021) 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, 198816 + ... + 204221.

It is an arithmetic number, because the mean of its divisors is an integer number (97938234).

Almost surely, 2^1089409011 is an apocalyptic number.

1089409011 is a deficient number, since it is larger than the sum of its proper divisors (477602733).

1089409011 is a wasteful number, since it uses less digits than its factorization.

1089409011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403110.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 1089409011 is about 33006.1965545865. The cubic root of 1089409011 is about 1028.9564354300.

The spelling of 1089409011 in words is "one billion, eighty-nine million, four hundred nine thousand, eleven".