1166551204 has 96 divisors (see below), whose sum is σ = 2634039296. Its totient is φ = 439655040.

The previous prime is 1166551163. The next prime is 1166551219. The reversal of 1166551204 is 4021556611.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 755257 + ... + 756799.

Almost surely, 2^1166551204 is an apocalyptic number.

1166551204 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 1166551204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317019648).

1166551204 is an abundant number, since it is smaller than the sum of its proper divisors (1467488092).

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

1166551204 is a wasteful number, since it uses less digits than its factorization.

1166551204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1166551204 is about 34154.8123110053. The cubic root of 1166551204 is about 1052.6918697150.

The spelling of 1166551204 in words is "one billion, one hundred sixty-six million, five hundred fifty-one thousand, two hundred four".