1166681355 has 64 divisors (see below), whose sum is σ = 2267274240. Its totient is φ = 500097024.

The previous prime is 1166681353. The next prime is 1166681381. The reversal of 1166681355 is 5531866611.

It is not a de Polignac number, because 1166681355 - 2¹ = 1166681353 is a prime.

It is a super-2 number, since 2×1166681355² = 2722290768209272050, 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 polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 546931 + ... + 549059.

It is an arithmetic number, because the mean of its divisors is an integer number (35426160).

Almost surely, 2^1166681355 is an apocalyptic number.

1166681355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1166681355 is a deficient number, since it is larger than the sum of its proper divisors (1100592885).

1166681355 is a wasteful number, since it uses less digits than its factorization.

1166681355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468.

The product of its digits is 129600, while the sum is 42.

The square root of 1166681355 is about 34156.7175677055. The cubic root of 1166681355 is about 1052.7310175335.

The spelling of 1166681355 in words is "one billion, one hundred sixty-six million, six hundred eighty-one thousand, three hundred fifty-five".