1166251444 has 12 divisors (see below), whose sum is σ = 2061148068. Its totient is φ = 577352000.

The previous prime is 1166251439. The next prime is 1166251451. The reversal of 1166251444 is 4441526611.

It can be written as a sum of positive squares in 2 ways, for example, as 754161444 + 412090000 = 27462^2 + 20300^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442977 + ... + 1443784.

It is an arithmetic number, because the mean of its divisors is an integer number (171762339).

Almost surely, 2^1166251444 is an apocalyptic number.

It is an amenable number.

1166251444 is a deficient number, since it is larger than the sum of its proper divisors (894896624).

1166251444 is a wasteful number, since it uses less digits than its factorization.

1166251444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886866 (or 2886864 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 1166251444 is about 34150.4237748231. The cubic root of 1166251444 is about 1052.6016945198.

The spelling of 1166251444 in words is "one billion, one hundred sixty-six million, two hundred fifty-one thousand, four hundred forty-four".