1166451613 has 8 divisors (see below), whose sum is σ = 1192068576. Its totient is φ = 1140968400.

The previous prime is 1166451563. The next prime is 1166451673. The reversal of 1166451613 is 3161546611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166451613 - 2⁹ = 1166451101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166451673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15703 + ... + 50788.

It is an arithmetic number, because the mean of its divisors is an integer number (149008572).

Almost surely, 2^1166451613 is an apocalyptic number.

It is an amenable number.

1166451613 is a deficient number, since it is larger than the sum of its proper divisors (25616963).

1166451613 is an equidigital number, since it uses as much as digits as its factorization.

1166451613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66875.

The product of its digits is 12960, while the sum is 34.

The square root of 1166451613 is about 34153.3543447785. The cubic root of 1166451613 is about 1052.6619120016.

The spelling of 1166451613 in words is "one billion, one hundred sixty-six million, four hundred fifty-one thousand, six hundred thirteen".