618054621 has 4 divisors (see below), whose sum is σ = 824072832. Its totient is φ = 412036412.

The previous prime is 618054611. The next prime is 618054649. The reversal of 618054621 is 126450816.

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 618054621 - 2⁵ = 618054589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618054611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103009101 + ... + 103009106.

It is an arithmetic number, because the mean of its divisors is an integer number (206018208).

Almost surely, 2^618054621 is an apocalyptic number.

It is an amenable number.

618054621 is a deficient number, since it is larger than the sum of its proper divisors (206018211).

618054621 is a wasteful number, since it uses less digits than its factorization.

618054621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206018210.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 618054621 is about 24860.7043544627. The cubic root of 618054621 is about 851.8091207099.

The spelling of 618054621 in words is "six hundred eighteen million, fifty-four thousand, six hundred twenty-one".