618405480 has 288 divisors, whose sum is σ = 2551292640. Its totient is φ = 128459520.

The previous prime is 618405451. The next prime is 618405493. The reversal of 618405480 is 84504816.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 192447 + ... + 195633.

It is an arithmetic number, because the mean of its divisors is an integer number (8858655).

Almost surely, 2^618405480 is an apocalyptic number.

618405480 is a gapful number since it is divisible by the number (60) 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 618405480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275646320).

618405480 is an abundant number, since it is smaller than the sum of its proper divisors (1932887160).

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

618405480 is a wasteful number, since it uses less digits than its factorization.

618405480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229 (or 3215 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 618405480 is about 24867.7598508591. The cubic root of 618405480 is about 851.9702760245.

The spelling of 618405480 in words is "six hundred eighteen million, four hundred five thousand, four hundred eighty".