486121813 has 4 divisors (see below), whose sum is σ = 507257568. Its totient is φ = 464986060.

The previous prime is 486121807. The next prime is 486121829. The reversal of 486121813 is 318121684.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-486121813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (486121313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10567843 + ... + 10567888.

It is an arithmetic number, because the mean of its divisors is an integer number (126814392).

Almost surely, 2^486121813 is an apocalyptic number.

It is an amenable number.

486121813 is a deficient number, since it is larger than the sum of its proper divisors (21135755).

486121813 is a wasteful number, since it uses less digits than its factorization.

486121813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21135754.

The product of its digits is 9216, while the sum is 34.

The square root of 486121813 is about 22048.1702868968. The cubic root of 486121813 is about 786.2881000946.

The spelling of 486121813 in words is "four hundred eighty-six million, one hundred twenty-one thousand, eight hundred thirteen".