4875642638 has 4 divisors (see below), whose sum is σ = 7313463960. Its totient is φ = 2437821318.

The previous prime is 4875642631. The next prime is 4875642641. The reversal of 4875642638 is 8362465784.

It is a happy number.

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

It is a super-2 number, since 2×4875642638² = 47543782266967198088, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4875642638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4875642631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1218910658 + ... + 1218910661.

It is an arithmetic number, because the mean of its divisors is an integer number (1828365990).

Almost surely, 2^4875642638 is an apocalyptic number.

4875642638 is a deficient number, since it is larger than the sum of its proper divisors (2437821322).

4875642638 is a wasteful number, since it uses less digits than its factorization.

4875642638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437821321.

The product of its digits is 7741440, while the sum is 53.

The square root of 4875642638 is about 69825.8020934955. The cubic root of 4875642638 is about 1695.6802249459.

The spelling of 4875642638 in words is "four billion, eight hundred seventy-five million, six hundred forty-two thousand, six hundred thirty-eight".