618120455 has 4 divisors (see below), whose sum is σ = 741744552. Its totient is φ = 494496360.

The previous prime is 618120443. The next prime is 618120457. The reversal of 618120455 is 554021816.

618120455 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 not a de Polignac number, because 618120455 - 2²⁸ = 349684999 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 (618120457) 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, 61812041 + ... + 61812050.

It is an arithmetic number, because the mean of its divisors is an integer number (185436138).

Almost surely, 2^618120455 is an apocalyptic number.

618120455 is a deficient number, since it is larger than the sum of its proper divisors (123624097).

618120455 is a wasteful number, since it uses less digits than its factorization.

618120455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123624096.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 618120455 is about 24862.0283766229. The cubic root of 618120455 is about 851.8393639973.

The spelling of 618120455 in words is "six hundred eighteen million, one hundred twenty thousand, four hundred fifty-five".