1166681354 has 8 divisors (see below), whose sum is σ = 1750278180. Its totient is φ = 583255296.

The previous prime is 1166681353. The next prime is 1166681381. The reversal of 1166681354 is 4531866611.

It can be written as a sum of positive squares in 2 ways, for example, as 1127280625 + 39400729 = 33575^2 + 6277^2 .

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

It is a super-2 number, since 2×1166681354² = 2722290763542546632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1166681353) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23969 + ... + 53924.

Almost surely, 2^1166681354 is an apocalyptic number.

1166681354 is a deficient number, since it is larger than the sum of its proper divisors (583596826).

1166681354 is an equidigital number, since it uses as much as digits as its factorization.

1166681354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85384.

The product of its digits is 103680, while the sum is 41.

The square root of 1166681354 is about 34156.7175530671. The cubic root of 1166681354 is about 1052.7310172327.

The spelling of 1166681354 in words is "one billion, one hundred sixty-six million, six hundred eighty-one thousand, three hundred fifty-four".