1306166081 has 12 divisors (see below), whose sum is σ = 1442171136. Its totient is φ = 1182074520.

The previous prime is 1306166063. The next prime is 1306166111. The reversal of 1306166081 is 1806616031.

It is not a de Polignac number, because 1306166081 - 2¹⁰ = 1306165057 is a prime.

It is a super-2 number, since 2×1306166081² = 3412139662309797122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306166041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2780 + ... + 51186.

It is an arithmetic number, because the mean of its divisors is an integer number (120180928).

Almost surely, 2^1306166081 is an apocalyptic number.

1306166081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1306166081 is a deficient number, since it is larger than the sum of its proper divisors (136005055).

1306166081 is a wasteful number, since it uses less digits than its factorization.

1306166081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48652 (or 48641 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1306166081 is about 36140.9197586337. The cubic root of 1306166081 is about 1093.1157048641.

The spelling of 1306166081 in words is "one billion, three hundred six million, one hundred sixty-six thousand, eighty-one".