618475290623 has 4 divisors (see below), whose sum is σ = 618476863488. Its totient is φ = 618473717760.

The previous prime is 618475290607. The next prime is 618475290649. The reversal of 618475290623 is 326092574816.

It is a Cunningham number, because it is equal to 786432²-1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 618475290623 - 2⁴ = 618475290607 is a prime.

It is a super-2 number, since 2×618475290623² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618475292623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (37) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393215 + ... + 1179647.

It is an arithmetic number, because the mean of its divisors is an integer number (154619215872).

It is a 1-persistent number, because it is pandigital, but 2⋅618475290623 = 1236950581246 is not.

Almost surely, 2^618475290623 is an apocalyptic number.

618475290623 is a deficient number, since it is larger than the sum of its proper divisors (1572865).

618475290623 is an equidigital number, since it uses as much as digits as its factorization.

618475290623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572864.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 618475290623 in words is "six hundred eighteen billion, four hundred seventy-five million, two hundred ninety thousand, six hundred twenty-three".