2636243164 has 24 divisors (see below), whose sum is σ = 4845915648. Its totient is φ = 1252455600.

The previous prime is 2636243089. The next prime is 2636243177. The reversal of 2636243164 is 4613426362.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80992 + ... + 108775.

It is an arithmetic number, because the mean of its divisors is an integer number (201913152).

Almost surely, 2^2636243164 is an apocalyptic number.

It is an amenable number.

2636243164 is a deficient number, since it is larger than the sum of its proper divisors (2209672484).

2636243164 is a wasteful number, since it uses less digits than its factorization.

2636243164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189945 (or 189943 counting only the distinct ones).

The product of its digits is 124416, while the sum is 37.

The square root of 2636243164 is about 51344.3586385106. The cubic root of 2636243164 is about 1381.4287457191.

The spelling of 2636243164 in words is "two billion, six hundred thirty-six million, two hundred forty-three thousand, one hundred sixty-four".