1166252340 has 96 divisors (see below), whose sum is σ = 3599293824. Its totient is φ = 279797760.

The previous prime is 1166252299. The next prime is 1166252359. The reversal of 1166252340 is 432526611.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1166252298 and 1166252307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54912 + ... + 73128.

It is an arithmetic number, because the mean of its divisors is an integer number (37492644).

Almost surely, 2^1166252340 is an apocalyptic number.

1166252340 is a gapful number since it is divisible by the number (10) 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 1166252340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1799646912).

1166252340 is an abundant number, since it is smaller than the sum of its proper divisors (2433041484).

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

1166252340 is a wasteful number, since it uses less digits than its factorization.

1166252340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18337 (or 18335 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1166252340 is about 34150.4368932522. The cubic root of 1166252340 is about 1052.6019640817.

Adding to 1166252340 its reverse (432526611), we get a palindrome (1598778951).

The spelling of 1166252340 in words is "one billion, one hundred sixty-six million, two hundred fifty-two thousand, three hundred forty".