1166813458 has 16 divisors (see below), whose sum is σ = 1791444096. Its totient is φ = 569820960.

The previous prime is 1166813449. The next prime is 1166813491. The reversal of 1166813458 is 8543186611.

It is a super-2 number, since 2×1166813458² = 2722907291539835528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23758 + ... + 53833.

It is an arithmetic number, because the mean of its divisors is an integer number (111965256).

Almost surely, 2^1166813458 is an apocalyptic number.

1166813458 is a deficient number, since it is larger than the sum of its proper divisors (624630638).

1166813458 is a wasteful number, since it uses less digits than its factorization.

1166813458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77769.

The product of its digits is 138240, while the sum is 43.

The square root of 1166813458 is about 34158.6512907053. The cubic root of 1166813458 is about 1052.7707495124.

The spelling of 1166813458 in words is "one billion, one hundred sixty-six million, eight hundred thirteen thousand, four hundred fifty-eight".