2638878348 has 96 divisors (see below), whose sum is σ = 6492487680. Its totient is φ = 833152320.

The previous prime is 2638878271. The next prime is 2638878349. The reversal of 2638878348 is 8438788362.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2638878349) 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, 5956615 + ... + 5957057.

It is an arithmetic number, because the mean of its divisors is an integer number (67630080).

Almost surely, 2^2638878348 is an apocalyptic number.

It is an amenable number.

2638878348 is an abundant number, since it is smaller than the sum of its proper divisors (3853609332).

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

2638878348 is a wasteful number, since it uses less digits than its factorization.

2638878348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 785 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 57.

The square root of 2638878348 is about 51370.0140938271. The cubic root of 2638878348 is about 1381.8888836783. Note that the first 5 decimals are identical.

The spelling of 2638878348 in words is "two billion, six hundred thirty-eight million, eight hundred seventy-eight thousand, three hundred forty-eight".