1066136444 has 12 divisors (see below), whose sum is σ = 1883176344. Its totient is φ = 528086064.

The previous prime is 1066136443. The next prime is 1066136447. The reversal of 1066136444 is 4446316601.

It is a happy number.

It is a super-2 number, since 2×1066136444² = 2273293834449930272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066136443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245059 + ... + 1245914.

It is an arithmetic number, because the mean of its divisors is an integer number (156931362).

Almost surely, 2^1066136444 is an apocalyptic number.

It is an amenable number.

1066136444 is a deficient number, since it is larger than the sum of its proper divisors (817039900).

1066136444 is a wasteful number, since it uses less digits than its factorization.

1066136444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491084 (or 2491082 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 1066136444 is about 32651.7448844621. The cubic root of 1066136444 is about 1021.5765840358.

The spelling of 1066136444 in words is "one billion, sixty-six million, one hundred thirty-six thousand, four hundred forty-four".