1061811806 has 16 divisors (see below), whose sum is σ = 1839717360. Its totient is φ = 454250880.

The previous prime is 1061811799. The next prime is 1061811851. The reversal of 1061811806 is 6081181601.

It is a super-2 number, since 2×1061811806² = 2254888622721963272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419161 + ... + 1419908.

It is an arithmetic number, because the mean of its divisors is an integer number (114982335).

Almost surely, 2^1061811806 is an apocalyptic number.

1061811806 is a deficient number, since it is larger than the sum of its proper divisors (777905554).

1061811806 is a wasteful number, since it uses less digits than its factorization.

1061811806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839099.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 1061811806 is about 32585.4539020097. The cubic root of 1061811806 is about 1020.1934164803.

It can be divided in two parts, 10 and 61811806, that added together give a palindrome (61811816).

The spelling of 1061811806 in words is "one billion, sixty-one million, eight hundred eleven thousand, eight hundred six".