481315891 has 4 divisors (see below), whose sum is σ = 550075312. Its totient is φ = 412556472.

The previous prime is 481315867. The next prime is 481315897. The reversal of 481315891 is 198513184.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 481315891 - 2⁵ = 481315859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481315897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34379700 + ... + 34379713.

It is an arithmetic number, because the mean of its divisors is an integer number (137518828).

Almost surely, 2^481315891 is an apocalyptic number.

481315891 is a deficient number, since it is larger than the sum of its proper divisors (68759421).

481315891 is an equidigital number, since it uses as much as digits as its factorization.

481315891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68759420.

The product of its digits is 34560, while the sum is 40.

The square root of 481315891 is about 21938.9127123474. The cubic root of 481315891 is about 783.6883669431.

The spelling of 481315891 in words is "four hundred eighty-one million, three hundred fifteen thousand, eight hundred ninety-one".