1166603984 has 80 divisors (see below), whose sum is σ = 2795154432. Its totient is φ = 459316224.

The previous prime is 1166603947. The next prime is 1166604007. The reversal of 1166603984 is 4893066611.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322892 + ... + 326484.

Almost surely, 2^1166603984 is an apocalyptic number.

1166603984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166603984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1397577216).

1166603984 is an abundant number, since it is smaller than the sum of its proper divisors (1628550448).

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

1166603984 is a wasteful number, since it uses less digits than its factorization.

1166603984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844 (or 3838 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1166603984 is about 34155.5849605888. The cubic root of 1166603984 is about 1052.7077456401.

The spelling of 1166603984 in words is "one billion, one hundred sixty-six million, six hundred three thousand, nine hundred eighty-four".