1065660189 has 12 divisors (see below), whose sum is σ = 1561794528. Its totient is φ = 645854440.

The previous prime is 1065660161. The next prime is 1065660209. The reversal of 1065660189 is 9810665601.

It is a happy number.

It is not a de Polignac number, because 1065660189 - 2²⁸ = 797224733 is a prime.

It is a super-2 number, since 2×1065660189² = 2271263276839031442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065660189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065660149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1467489 + ... + 1468214.

It is an arithmetic number, because the mean of its divisors is an integer number (130149544).

Almost surely, 2^1065660189 is an apocalyptic number.

It is an amenable number.

1065660189 is a deficient number, since it is larger than the sum of its proper divisors (496134339).

1065660189 is a wasteful number, since it uses less digits than its factorization.

1065660189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935728 (or 2935717 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1065660189 is about 32644.4511211324. The cubic root of 1065660189 is about 1021.4244448410.

The spelling of 1065660189 in words is "one billion, sixty-five million, six hundred sixty thousand, one hundred eighty-nine".