1066894738 has 48 divisors (see below), whose sum is σ = 2122798104. Its totient is φ = 397232640.

The previous prime is 1066894727. The next prime is 1066894771. The reversal of 1066894738 is 8374986601.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 779693929 + 287200809 = 27923^2 + 16947^2 .

It is a super-2 number, since 2×1066894738² = 2276528763944177288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2973 + ... + 46288.

Almost surely, 2^1066894738 is an apocalyptic number.

1066894738 is a deficient number, since it is larger than the sum of its proper divisors (1055903366).

1066894738 is a wasteful number, since it uses less digits than its factorization.

1066894738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49307 (or 49300 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 1066894738 is about 32663.3546654351. The cubic root of 1066894738 is about 1021.8187268410.

The spelling of 1066894738 in words is "one billion, sixty-six million, eight hundred ninety-four thousand, seven hundred thirty-eight".