2655636438 has 48 divisors (see below), whose sum is σ = 6653692080. Its totient is φ = 700386624.

The previous prime is 2655636427. The next prime is 2655636439. The reversal of 2655636438 is 8346365562.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2655636439) 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, 343593 + ... + 351236.

It is an arithmetic number, because the mean of its divisors is an integer number (138618585).

Almost surely, 2^2655636438 is an apocalyptic number.

2655636438 is an abundant number, since it is smaller than the sum of its proper divisors (3998055642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2655636438 is a wasteful number, since it uses less digits than its factorization.

2655636438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694861 (or 694854 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 48.

The square root of 2655636438 is about 51532.8675507195. The cubic root of 2655636438 is about 1384.8079230737.

The spelling of 2655636438 in words is "two billion, six hundred fifty-five million, six hundred thirty-six thousand, four hundred thirty-eight".