2638614668 has 6 divisors (see below), whose sum is σ = 4617575676. Its totient is φ = 1319307332.

The previous prime is 2638614647. The next prime is 2638614679. The reversal of 2638614668 is 8664168362.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329826830 + ... + 329826837.

It is an arithmetic number, because the mean of its divisors is an integer number (769595946).

Almost surely, 2^2638614668 is an apocalyptic number.

It is an amenable number.

2638614668 is a deficient number, since it is larger than the sum of its proper divisors (1978961008).

2638614668 is a wasteful number, since it uses less digits than its factorization.

2638614668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659653671 (or 659653669 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 50.

The square root of 2638614668 is about 51367.4475519273. The cubic root of 2638614668 is about 1381.8428554611.

The spelling of 2638614668 in words is "two billion, six hundred thirty-eight million, six hundred fourteen thousand, six hundred sixty-eight".