4638500391 has 16 divisors (see below), whose sum is σ = 7098534144. Its totient is φ = 2639193024.

The previous prime is 4638500389. The next prime is 4638500411. The reversal of 4638500391 is 1930058364.

It is not a de Polignac number, because 4638500391 - 2¹ = 4638500389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638500311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469101 + ... + 478886.

It is an arithmetic number, because the mean of its divisors is an integer number (443658384).

Almost surely, 2^4638500391 is an apocalyptic number.

4638500391 is a deficient number, since it is larger than the sum of its proper divisors (2460033753).

4638500391 is a wasteful number, since it uses less digits than its factorization.

4638500391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948230.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 4638500391 is about 68106.5370651012. The cubic root of 4638500391 is about 1667.7304788688.

The spelling of 4638500391 in words is "four billion, six hundred thirty-eight million, five hundred thousand, three hundred ninety-one".