1166443964 has 24 divisors (see below), whose sum is σ = 2336218080. Its totient is φ = 499190976.

The previous prime is 1166443963. The next prime is 1166444047. The reversal of 1166443964 is 4693446611.

It is a super-3 number, since 3×1166443964³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166443963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9527 + ... + 49230.

It is an arithmetic number, because the mean of its divisors is an integer number (97342420).

Almost surely, 2^1166443964 is an apocalyptic number.

1166443964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1166443964 is an abundant number, since it is smaller than the sum of its proper divisors (1169774116).

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

1166443964 is a wasteful number, since it uses less digits than its factorization.

1166443964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59477 (or 59475 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 1166443964 is about 34153.2423643788. The cubic root of 1166443964 is about 1052.6596110551.

The spelling of 1166443964 in words is "one billion, one hundred sixty-six million, four hundred forty-three thousand, nine hundred sixty-four".