2606311989 has 24 divisors (see below), whose sum is σ = 3826093440. Its totient is φ = 1709353152.

The previous prime is 2606311979. The next prime is 2606311991. The reversal of 2606311989 is 9891136062.

It is a happy number.

2606311989 is a `hidden beast` number, since 2 + 6 + 0 + 631 + 1 + 9 + 8 + 9 = 666.

2606311989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2606311989 - 2⁵ = 2606311957 is a prime.

It is a super-2 number, since 2×2606311989² = 13585724368010272242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2606311979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194737 + ... + 207689.

It is an arithmetic number, because the mean of its divisors is an integer number (159420560).

Almost surely, 2^2606311989 is an apocalyptic number.

It is an amenable number.

2606311989 is a deficient number, since it is larger than the sum of its proper divisors (1219781451).

2606311989 is a wasteful number, since it uses less digits than its factorization.

2606311989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13321 (or 13318 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 2606311989 is about 51052.0517609234. The cubic root of 2606311989 is about 1376.1807139177.

The spelling of 2606311989 in words is "two billion, six hundred six million, three hundred eleven thousand, nine hundred eighty-nine".