618481315 has 4 divisors (see below), whose sum is σ = 742177584. Its totient is φ = 494785048.

The previous prime is 618481313. The next prime is 618481321. The reversal of 618481315 is 513184816.

618481315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 618481315 - 2¹ = 618481313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618481313) 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, 61848127 + ... + 61848136.

It is an arithmetic number, because the mean of its divisors is an integer number (185544396).

Almost surely, 2^618481315 is an apocalyptic number.

618481315 is a deficient number, since it is larger than the sum of its proper divisors (123696269).

618481315 is a wasteful number, since it uses less digits than its factorization.

618481315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123696268.

The product of its digits is 23040, while the sum is 37.

The square root of 618481315 is about 24869.2845695247. The cubic root of 618481315 is about 852.0051002766.

The spelling of 618481315 in words is "six hundred eighteen million, four hundred eighty-one thousand, three hundred fifteen".