618939552 has 384 divisors, whose sum is σ = 2176892928. Its totient is φ = 149299200.

The previous prime is 618939539. The next prime is 618939557. The reversal of 618939552 is 255939816.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (618939557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8478588 + ... + 8478660.

It is an arithmetic number, because the mean of its divisors is an integer number (5668992).

Almost surely, 2^618939552 is an apocalyptic number.

618939552 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618939552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088446464).

618939552 is an abundant number, since it is smaller than the sum of its proper divisors (1557953376).

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

618939552 is a wasteful number, since it uses less digits than its factorization.

618939552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 164 counting only the distinct ones).

The product of its digits is 583200, while the sum is 48.

The square root of 618939552 is about 24878.4957744635. The cubic root of 618939552 is about 852.2154671164.

The spelling of 618939552 in words is "six hundred eighteen million, nine hundred thirty-nine thousand, five hundred fifty-two".