2611161589 has 4 divisors (see below), whose sum is σ = 2695392640. Its totient is φ = 2526930540.

The previous prime is 2611161559. The next prime is 2611161607. The reversal of 2611161589 is 9851611162.

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 2611161589 - 2¹¹ = 2611159541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2611161559) 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, 42115479 + ... + 42115540.

It is an arithmetic number, because the mean of its divisors is an integer number (673848160).

Almost surely, 2^2611161589 is an apocalyptic number.

It is an amenable number.

2611161589 is a deficient number, since it is larger than the sum of its proper divisors (84231051).

2611161589 is an equidigital number, since it uses as much as digits as its factorization.

2611161589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84231050.

The product of its digits is 25920, while the sum is 40.

The square root of 2611161589 is about 51099.5263089591. The cubic root of 2611161589 is about 1377.0337444158.

The spelling of 2611161589 in words is "two billion, six hundred eleven million, one hundred sixty-one thousand, five hundred eighty-nine".