2648197638 has 40 divisors (see below), whose sum is σ = 5939028480. Its totient is φ = 881973360.

The previous prime is 2648197609. The next prime is 2648197639. The reversal of 2648197638 is 8367918462.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2648197639) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 200808 + ... + 213588.

It is an arithmetic number, because the mean of its divisors is an integer number (148475712).

Almost surely, 2^2648197638 is an apocalyptic number.

2648197638 is an abundant number, since it is smaller than the sum of its proper divisors (3290830842).

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

2648197638 is a wasteful number, since it uses less digits than its factorization.

2648197638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14074 (or 14065 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 2648197638 is about 51460.6416399951. The cubic root of 2648197638 is about 1383.5137019115.

The spelling of 2648197638 in words is "two billion, six hundred forty-eight million, one hundred ninety-seven thousand, six hundred thirty-eight".