4271252638 has 4 divisors (see below), whose sum is σ = 6406878960. Its totient is φ = 2135626318.

The previous prime is 4271252603. The next prime is 4271252639. The reversal of 4271252638 is 8362521724.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 4271252638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4271252639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067813158 + ... + 1067813161.

It is an arithmetic number, because the mean of its divisors is an integer number (1601719740).

Almost surely, 2^4271252638 is an apocalyptic number.

4271252638 is a deficient number, since it is larger than the sum of its proper divisors (2135626322).

4271252638 is a wasteful number, since it uses less digits than its factorization.

4271252638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135626321.

The product of its digits is 161280, while the sum is 40.

The square root of 4271252638 is about 65354.8210769489. The cubic root of 4271252638 is about 1622.5014241644.

The spelling of 4271252638 in words is "four billion, two hundred seventy-one million, two hundred fifty-two thousand, six hundred thirty-eight".