1066358909 has 16 divisors (see below), whose sum is σ = 1342659456. Its totient is φ = 822696000.

The previous prime is 1066358837. The next prime is 1066358947. The reversal of 1066358909 is 9098536601.

It is not a de Polignac number, because 1066358909 - 2¹² = 1066354813 is a prime.

It is a super-2 number, since 2×1066358909² = 2274242645607340562, 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 (1066358989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60782 + ... + 76335.

It is an arithmetic number, because the mean of its divisors is an integer number (83916216).

Almost surely, 2^1066358909 is an apocalyptic number.

It is an amenable number.

1066358909 is a deficient number, since it is larger than the sum of its proper divisors (276300547).

1066358909 is a wasteful number, since it uses less digits than its factorization.

1066358909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137236.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 1066358909 is about 32655.1513394135. The cubic root of 1066358909 is about 1021.6476347381.

The spelling of 1066358909 in words is "one billion, sixty-six million, three hundred fifty-eight thousand, nine hundred nine".