2186042564 has 12 divisors (see below), whose sum is σ = 3868559100. Its totient is φ = 1080739968.

The previous prime is 2186042561. The next prime is 2186042569. The reversal of 2186042564 is 4652406812.

It can be written as a sum of positive squares in 2 ways, for example, as 200448964 + 1985593600 = 14158^2 + 44560^2 .

It is not an unprimeable number, because it can be changed into a prime (2186042561) 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, 3069929 + ... + 3070640.

It is an arithmetic number, because the mean of its divisors is an integer number (322379925).

Almost surely, 2^2186042564 is an apocalyptic number.

It is an amenable number.

2186042564 is a deficient number, since it is larger than the sum of its proper divisors (1682516536).

2186042564 is a wasteful number, since it uses less digits than its factorization.

2186042564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6140662 (or 6140660 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 2186042564 is about 46755.1340924181. The cubic root of 2186042564 is about 1297.8351670194.

The spelling of 2186042564 in words is "two billion, one hundred eighty-six million, forty-two thousand, five hundred sixty-four".