618586481 has 4 divisors (see below), whose sum is σ = 618636864. Its totient is φ = 618536100.

The previous prime is 618586469. The next prime is 618586483. The reversal of 618586481 is 184685816.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 618586481 - 2¹⁴ = 618570097 is a prime.

It is a super-2 number, since 2×618586481² = 765298468951926722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618586483) 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, 6596 + ... + 35786.

It is an arithmetic number, because the mean of its divisors is an integer number (154659216).

Almost surely, 2^618586481 is an apocalyptic number.

It is an amenable number.

618586481 is a deficient number, since it is larger than the sum of its proper divisors (50383).

618586481 is a wasteful number, since it uses less digits than its factorization.

618586481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50382.

The product of its digits is 368640, while the sum is 47.

The square root of 618586481 is about 24871.3988549096. The cubic root of 618586481 is about 852.0533889303.

The spelling of 618586481 in words is "six hundred eighteen million, five hundred eighty-six thousand, four hundred eighty-one".