2611538985 has 32 divisors (see below), whose sum is σ = 4570651008. Its totient is φ = 1262776320.

The previous prime is 2611538981. The next prime is 2611538987. The reversal of 2611538985 is 5898351162.

It is a happy number.

2611538985 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 2611538985 - 2² = 2611538981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2611538981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40329 + ... + 82761.

It is an arithmetic number, because the mean of its divisors is an integer number (142832844).

Almost surely, 2^2611538985 is an apocalyptic number.

It is an amenable number.

2611538985 is a deficient number, since it is larger than the sum of its proper divisors (1959112023).

2611538985 is a wasteful number, since it uses less digits than its factorization.

2611538985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42825.

The product of its digits is 518400, while the sum is 48.

The square root of 2611538985 is about 51103.2189299265. The cubic root of 2611538985 is about 1377.1000829621.

The spelling of 2611538985 in words is "two billion, six hundred eleven million, five hundred thirty-eight thousand, nine hundred eighty-five".