1166689854 has 48 divisors (see below), whose sum is σ = 2792574720. Its totient is φ = 349062480.

The previous prime is 1166689841. The next prime is 1166689859. The reversal of 1166689854 is 4589866611.

It is a super-2 number, since 2×1166689854² = 2722330430853082632, which contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1166689854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166689859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21652 + ... + 52935.

It is an arithmetic number, because the mean of its divisors is an integer number (58178640).

Almost surely, 2^1166689854 is an apocalyptic number.

1166689854 is an abundant number, since it is smaller than the sum of its proper divisors (1625884866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166689854 is a wasteful number, since it uses less digits than its factorization.

1166689854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74685 (or 74682 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 1166689854 is about 34156.8419793165. The cubic root of 1166689854 is about 1052.7335738268.

The spelling of 1166689854 in words is "one billion, one hundred sixty-six million, six hundred eighty-nine thousand, eight hundred fifty-four".