618798744 has 128 divisors (see below), whose sum is σ = 1766707200. Its totient is φ = 200603520.

The previous prime is 618798727. The next prime is 618798749. The reversal of 618798744 is 447897816.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618798749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2186427 + ... + 2186709.

It is an arithmetic number, because the mean of its divisors is an integer number (13802400).

Almost surely, 2^618798744 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 618798744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883353600).

618798744 is an abundant number, since it is smaller than the sum of its proper divisors (1147908456).

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

618798744 is a wasteful number, since it uses less digits than its factorization.

618798744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 532 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 618798744 is about 24875.6656996351. The cubic root of 618798744 is about 852.1508362187.

The spelling of 618798744 in words is "six hundred eighteen million, seven hundred ninety-eight thousand, seven hundred forty-four".