1161326673 has 16 divisors (see below), whose sum is σ = 1852829440. Its totient is φ = 714662352.

The previous prime is 1161326641. The next prime is 1161326701. The reversal of 1161326673 is 3766231611.

1161326673 is a `hidden beast` number, since 11 + 613 + 26 + 6 + 7 + 3 = 666.

It is not a de Polignac number, because 1161326673 - 2⁵ = 1161326641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161326473) 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, 1653961 + ... + 1654662.

It is an arithmetic number, because the mean of its divisors is an integer number (115801840).

Almost surely, 2^1161326673 is an apocalyptic number.

1161326673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1161326673 is a deficient number, since it is larger than the sum of its proper divisors (691502767).

1161326673 is a wasteful number, since it uses less digits than its factorization.

1161326673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308645 (or 3308639 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 1161326673 is about 34078.2433966306. The cubic root of 1161326673 is about 1051.1179847165.

The spelling of 1161326673 in words is "one billion, one hundred sixty-one million, three hundred twenty-six thousand, six hundred seventy-three".