1609707680 has 48 divisors (see below), whose sum is σ = 4346213760. Its totient is φ = 551899392.

The previous prime is 1609707677. The next prime is 1609707689. The reversal of 1609707680 is 867079061.

It is not an unprimeable number, because it can be changed into a prime (1609707689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717500 + ... + 719739.

It is an arithmetic number, because the mean of its divisors is an integer number (90546120).

Almost surely, 2^1609707680 is an apocalyptic number.

1609707680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1609707680 is an abundant number, since it is smaller than the sum of its proper divisors (2736506080).

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

1609707680 is a wasteful number, since it uses less digits than its factorization.

1609707680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437261 (or 1437253 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 1609707680 is about 40121.1624956207. The cubic root of 1609707680 is about 1171.9677797523.

The spelling of 1609707680 in words is "one billion, six hundred nine million, seven hundred seven thousand, six hundred eighty".