2638968227 has 8 divisors (see below), whose sum is σ = 3147092736. Its totient is φ = 2163625992.

The previous prime is 2638968221. The next prime is 2638968289. The reversal of 2638968227 is 7228698362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2638968227 - 2⁸ = 2638967971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2638968221) 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, 8195393 + ... + 8195714.

It is an arithmetic number, because the mean of its divisors is an integer number (393386592).

Almost surely, 2^2638968227 is an apocalyptic number.

2638968227 is a deficient number, since it is larger than the sum of its proper divisors (508124509).

2638968227 is a wasteful number, since it uses less digits than its factorization.

2638968227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16391137.

The product of its digits is 3483648, while the sum is 53.

The square root of 2638968227 is about 51370.8889060721. Note that the first 3 decimals coincide. The cubic root of 2638968227 is about 1381.9045723365.

The spelling of 2638968227 in words is "two billion, six hundred thirty-eight million, nine hundred sixty-eight thousand, two hundred twenty-seven".