618988139328 has 168 divisors, whose sum is σ = 1791701865408. Its totient is φ = 188493447168.

The previous prime is 618988139303. The next prime is 618988139353. The reversal of 618988139328 is 823931889816.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (618988139303) and next prime (618988139353).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3049125 + ... + 3245787.

It is an arithmetic number, because the mean of its divisors is an integer number (10664892056).

Almost surely, 2^618988139328 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 618988139328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895850932704).

618988139328 is an abundant number, since it is smaller than the sum of its proper divisors (1172713726080).

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

618988139328 is a wasteful number, since it uses less digits than its factorization.

618988139328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196801 (or 196778 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 66.

The spelling of 618988139328 in words is "six hundred eighteen billion, nine hundred eighty-eight million, one hundred thirty-nine thousand, three hundred twenty-eight".