618443815452 has 24 divisors (see below), whose sum is σ = 1443049049232. Its totient is φ = 206146012800.

The previous prime is 618443815441. The next prime is 618443815463. The reversal of 618443815452 is 254518344816.

It is an interprime number because it is at equal distance from previous prime (618443815441) and next prime (618443815463).

It is a junction number, because it is equal to n+sod(n) for n = 618443815395 and 618443815404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1767802 + ... + 2088542.

It is an arithmetic number, because the mean of its divisors is an integer number (60127043718).

Almost surely, 2^618443815452 is an apocalyptic number.

It is an amenable number.

618443815452 is an abundant number, since it is smaller than the sum of its proper divisors (824605233780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618443815452 is a wasteful number, since it uses less digits than its factorization.

618443815452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481429 (or 481427 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 51.

The spelling of 618443815452 in words is "six hundred eighteen billion, four hundred forty-three million, eight hundred fifteen thousand, four hundred fifty-two".