1166620044 has 12 divisors (see below), whose sum is σ = 2722113464. Its totient is φ = 388873344.

The previous prime is 1166620043. The next prime is 1166620051. The reversal of 1166620044 is 4400266611.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1166620044² = 2722004654125123872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166619993 and 1166620020.

It is not an unprimeable number, because it can be changed into a prime (1166620043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 48609157 + ... + 48609180.

Almost surely, 2^1166620044 is an apocalyptic number.

It is an amenable number.

1166620044 is an abundant number, since it is smaller than the sum of its proper divisors (1555493420).

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

1166620044 is a wasteful number, since it uses less digits than its factorization.

1166620044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97218344 (or 97218342 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1166620044 is about 34155.8200604231. The cubic root of 1166620044 is about 1052.7125763022.

Adding to 1166620044 its reverse (4400266611), we get a palindrome (5566886655).

The spelling of 1166620044 in words is "one billion, one hundred sixty-six million, six hundred twenty thousand, forty-four".