618481121 has 4 divisors (see below), whose sum is σ = 619916544. Its totient is φ = 617045700.

The previous prime is 618481091. The next prime is 618481133. The reversal of 618481121 is 121184816.

It is a happy number.

618481121 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 618481121 - 2²⁶ = 551372257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618481181) 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, 717065 + ... + 717926.

It is an arithmetic number, because the mean of its divisors is an integer number (154979136).

Almost surely, 2^618481121 is an apocalyptic number.

It is an amenable number.

618481121 is a deficient number, since it is larger than the sum of its proper divisors (1435423).

618481121 is a wasteful number, since it uses less digits than its factorization.

618481121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435422.

The product of its digits is 3072, while the sum is 32.

The square root of 618481121 is about 24869.2806691307. The cubic root of 618481121 is about 852.0050111933.

The spelling of 618481121 in words is "six hundred eighteen million, four hundred eighty-one thousand, one hundred twenty-one".