1618840608 has 288 divisors, whose sum is σ = 5474101248. Its totient is φ = 409812480.

The previous prime is 1618840607. The next prime is 1618840633. The reversal of 1618840608 is 8060488161.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1618840608.

It is not an unprimeable number, because it can be changed into a prime (1618840607) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3496185 + ... + 3496647.

It is an arithmetic number, because the mean of its divisors is an integer number (19007296).

Almost surely, 2^1618840608 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 1618840608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2737050624).

1618840608 is an abundant number, since it is smaller than the sum of its proper divisors (3855260640).

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

1618840608 is a wasteful number, since it uses less digits than its factorization.

1618840608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 1618840608 is about 40234.8183542563. The cubic root of 1618840608 is about 1174.1800485582.

The spelling of 1618840608 in words is "one billion, six hundred eighteen million, eight hundred forty thousand, six hundred eight".