4856491638 has 48 divisors (see below), whose sum is σ = 10829641680. Its totient is φ = 1572000192.

The previous prime is 4856491597. The next prime is 4856491649. The reversal of 4856491638 is 8361946584.

4856491638 is a `hidden beast` number, since 48 + 56 + 491 + 63 + 8 = 666.

It is a super-2 number, since 2×4856491638² = 47171022059927846088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115768 + ... + 152036.

It is an arithmetic number, because the mean of its divisors is an integer number (225617535).

Almost surely, 2^4856491638 is an apocalyptic number.

4856491638 is an abundant number, since it is smaller than the sum of its proper divisors (5973150042).

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

4856491638 is a wasteful number, since it uses less digits than its factorization.

4856491638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36493 (or 36490 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 4856491638 is about 69688.5330452579. The cubic root of 4856491638 is about 1693.4571618875.

The spelling of 4856491638 in words is "four billion, eight hundred fifty-six million, four hundred ninety-one thousand, six hundred thirty-eight".