1066289291 has 4 divisors (see below), whose sum is σ = 1122409800. Its totient is φ = 1010168784.

The previous prime is 1066289267. The next prime is 1066289293. The reversal of 1066289291 is 1929826601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1066289291 - 2⁶ = 1066289227 is a prime.

It is a super-2 number, since 2×1066289291² = 2273945704202565362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066289293) 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, 28060226 + ... + 28060263.

It is an arithmetic number, because the mean of its divisors is an integer number (280602450).

Almost surely, 2^1066289291 is an apocalyptic number.

1066289291 is a deficient number, since it is larger than the sum of its proper divisors (56120509).

1066289291 is an equidigital number, since it uses as much as digits as its factorization.

1066289291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56120508.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 1066289291 is about 32654.0853646217. The cubic root of 1066289291 is about 1021.6254012567.

The spelling of 1066289291 in words is "one billion, sixty-six million, two hundred eighty-nine thousand, two hundred ninety-one".