1608606420 has 24 divisors (see below), whose sum is σ = 4504098144. Its totient is φ = 428961696.

The previous prime is 1608606379. The next prime is 1608606421. The reversal of 1608606420 is 246068061.

It is a happy number.

It is a super-2 number, since 2×1608606420² = 5175229228930432800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608606421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13404994 + ... + 13405113.

It is an arithmetic number, because the mean of its divisors is an integer number (187670756).

Almost surely, 2^1608606420 is an apocalyptic number.

1608606420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1608606420 is an abundant number, since it is smaller than the sum of its proper divisors (2895491724).

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

1608606420 is a wasteful number, since it uses less digits than its factorization.

1608606420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26810119 (or 26810117 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1608606420 is about 40107.4359689073. The cubic root of 1608606420 is about 1171.7004567491.

The spelling of 1608606420 in words is "one billion, six hundred eight million, six hundred six thousand, four hundred twenty".