2663138208 has 48 divisors (see below), whose sum is σ = 7231805280. Its totient is φ = 857101056.

The previous prime is 2663138197. The next prime is 2663138209. The reversal of 2663138208 is 8028313662.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×2663138208² = 14184610229818902528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2663138209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475510 + ... + 481077.

It is an arithmetic number, because the mean of its divisors is an integer number (150662610).

Almost surely, 2^2663138208 is an apocalyptic number.

It is an amenable number.

2663138208 is an abundant number, since it is smaller than the sum of its proper divisors (4568667072).

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

2663138208 is a wasteful number, since it uses less digits than its factorization.

2663138208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956629 (or 956621 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 2663138208 is about 51605.6024865518. The cubic root of 2663138208 is about 1386.1106545921.

The spelling of 2663138208 in words is "two billion, six hundred sixty-three million, one hundred thirty-eight thousand, two hundred eight".