1065980161 has 4 divisors (see below), whose sum is σ = 1122084400. Its totient is φ = 1009875924.

The previous prime is 1065980137. The next prime is 1065980203. The reversal of 1065980161 is 1610895601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1065980161 - 2¹³ = 1065971969 is a prime.

It is a super-2 number, since 2×1065980161² = 2272627407291171842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1065980161.

It is not an unprimeable number, because it can be changed into a prime (1065980561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28052091 + ... + 28052128.

It is an arithmetic number, because the mean of its divisors is an integer number (280521100).

Almost surely, 2^1065980161 is an apocalyptic number.

It is an amenable number.

1065980161 is a deficient number, since it is larger than the sum of its proper divisors (56104239).

1065980161 is an equidigital number, since it uses as much as digits as its factorization.

1065980161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56104238.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 1065980161 is about 32649.3516168392. The cubic root of 1065980161 is about 1021.5266645794.

The spelling of 1065980161 in words is "one billion, sixty-five million, nine hundred eighty thousand, one hundred sixty-one".