1608616780 has 48 divisors (see below), whose sum is σ = 3591532224. Its totient is φ = 603848960.

The previous prime is 1608616759. The next prime is 1608616781. The reversal of 1608616780 is 876168061.

It is not an unprimeable number, because it can be changed into a prime (1608616781) 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 15 ways as a sum of consecutive naturals, for example, 8611 + ... + 57370.

It is an arithmetic number, because the mean of its divisors is an integer number (74823588).

Almost surely, 2^1608616780 is an apocalyptic number.

1608616780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1608616780 is an abundant number, since it is smaller than the sum of its proper divisors (1982915444).

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

1608616780 is a wasteful number, since it uses less digits than its factorization.

1608616780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66066 (or 66064 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 1608616780 is about 40107.5651218071. The cubic root of 1608616780 is about 1171.7029721335.

The spelling of 1608616780 in words is "one billion, six hundred eight million, six hundred sixteen thousand, seven hundred eighty".