618853723043538 has 64 divisors (see below), whose sum is σ = 1272407486209920. Its totient is φ = 200512218880512.

The previous prime is 618853723043537. The next prime is 618853723043539. The reversal of 618853723043538 is 835340327358816.

It is an interprime number because it is at equal distance from previous prime (618853723043537) and next prime (618853723043539).

It is not an unprimeable number, because it can be changed into a prime (618853723043533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2866163128 + ... + 2866379036.

It is an arithmetic number, because the mean of its divisors is an integer number (19881366972030).

Almost surely, 2^{618853723043538} is an apocalyptic number.

618853723043538 is an abundant number, since it is smaller than the sum of its proper divisors (653553763166382).

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

618853723043538 is a wasteful number, since it uses less digits than its factorization.

618853723043538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228571.

The product of its (nonzero) digits is 348364800, while the sum is 66.

The spelling of 618853723043538 in words is "six hundred eighteen trillion, eight hundred fifty-three billion, seven hundred twenty-three million, forty-three thousand, five hundred thirty-eight".