1166454644 has 6 divisors (see below), whose sum is σ = 2041295634. Its totient is φ = 583227320.

The previous prime is 1166454629. The next prime is 1166454649. The reversal of 1166454644 is 4464546611.

It can be written as a sum of positive squares in only one way, i.e., 1114758544 + 51696100 = 33388^2 + 7190^2 .

It is a super-3 number, since 3×1166454644³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166454649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145806827 + ... + 145806834.

It is an arithmetic number, because the mean of its divisors is an integer number (340215939).

Almost surely, 2^1166454644 is an apocalyptic number.

It is an amenable number.

1166454644 is a deficient number, since it is larger than the sum of its proper divisors (874840990).

1166454644 is a wasteful number, since it uses less digits than its factorization.

1166454644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291613665 (or 291613663 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 1166454644 is about 34153.3987181364. The cubic root of 1166454644 is about 1052.6628237741.

The spelling of 1166454644 in words is "one billion, one hundred sixty-six million, four hundred fifty-four thousand, six hundred forty-four".