1002566161 has 4 divisors (see below), whose sum is σ = 1009205824. Its totient is φ = 995926500.

The previous prime is 1002566129. The next prime is 1002566167. The reversal of 1002566161 is 1616652001.

1002566161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1002566161 - 2⁵ = 1002566129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002566167) 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, 3319605 + ... + 3319906.

It is an arithmetic number, because the mean of its divisors is an integer number (252301456).

Almost surely, 2^1002566161 is an apocalyptic number.

It is an amenable number.

1002566161 is a deficient number, since it is larger than the sum of its proper divisors (6639663).

1002566161 is an equidigital number, since it uses as much as digits as its factorization.

1002566161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6639662.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1002566161 is about 31663.3251728242. The cubic root of 1002566161 is about 1000.8546563544.

The spelling of 1002566161 in words is "one billion, two million, five hundred sixty-six thousand, one hundred sixty-one".