1186164 has 60 divisors (see below), whose sum is σ = 3550624. Its totient is φ = 338256.

The previous prime is 1186147. The next prime is 1186169. The reversal of 1186164 is 4616811.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1186169) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2007 + ... + 2529.

2^1186164 is an apocalyptic number.

1186164 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 1186164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1775312).

1186164 is an abundant number, since it is smaller than the sum of its proper divisors (2364460).

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

1186164 is a wasteful number, since it uses less digits than its factorization.

1186164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 535 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1186164 is about 1089.1115645332. Note that the first 3 decimals coincide. The cubic root of 1186164 is about 105.8558620002.

The spelling of 1186164 in words is "one million, one hundred eighty-six thousand, one hundred sixty-four".