618238492704 has 1008 divisors, whose sum is σ = 2230634972160. Its totient is φ = 167894415360.

The previous prime is 618238492699. The next prime is 618238492723. The reversal of 618238492704 is 407294832816.

618238492704 is a `hidden beast` number, since 6 + 1 + 82 + 3 + 8 + 492 + 70 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a super-2 number, since 2×618238492704² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 167 ways as a sum of consecutive naturals, for example, 2586771817 + ... + 2586772055.

It is an arithmetic number, because the mean of its divisors is an integer number (2212931520).

Almost surely, 2^618238492704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618238492704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115317486080).

618238492704 is an abundant number, since it is smaller than the sum of its proper divisors (1612396479456).

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

618238492704 is a wasteful number, since it uses less digits than its factorization.

618238492704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 618238492704 in words is "six hundred eighteen billion, two hundred thirty-eight million, four hundred ninety-two thousand, seven hundred four".