481131638 has 16 divisors (see below), whose sum is σ = 796170816. Its totient is φ = 216644160.

The previous prime is 481131619. The next prime is 481131659. The reversal of 481131638 is 836131184.

It is a junction number, because it is equal to n+sod(n) for n = 481131598 and 481131607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224606 + ... + 226737.

It is an arithmetic number, because the mean of its divisors is an integer number (49760676).

Almost surely, 2^481131638 is an apocalyptic number.

481131638 is a deficient number, since it is larger than the sum of its proper divisors (315039178).

481131638 is a wasteful number, since it uses less digits than its factorization.

481131638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451399.

The product of its digits is 13824, while the sum is 35.

The square root of 481131638 is about 21934.7130822357. The cubic root of 481131638 is about 783.5883526802.

The spelling of 481131638 in words is "four hundred eighty-one million, one hundred thirty-one thousand, six hundred thirty-eight".