1066038389 has 8 divisors (see below), whose sum is σ = 1148299320. Its totient is φ = 983814336.

The previous prime is 1066038383. The next prime is 1066038451. The reversal of 1066038389 is 9838306601.

It can be written as a sum of positive squares in 4 ways, for example, as 107640625 + 958397764 = 10375^2 + 30958^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1066038389 - 2²⁰ = 1064989813 is a prime.

It is a super-2 number, since 2×1066038389² = 2272875693643430642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066038383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92267 + ... + 103175.

It is an arithmetic number, because the mean of its divisors is an integer number (143537415).

Almost surely, 2^1066038389 is an apocalyptic number.

It is an amenable number.

1066038389 is a deficient number, since it is larger than the sum of its proper divisors (82260931).

1066038389 is a wasteful number, since it uses less digits than its factorization.

1066038389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18439.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1066038389 is about 32650.2433222174. The cubic root of 1066038389 is about 1021.5452641662.

The spelling of 1066038389 in words is "one billion, sixty-six million, thirty-eight thousand, three hundred eighty-nine".