1609403260 has 96 divisors (see below), whose sum is σ = 3690513792. Its totient is φ = 587243520.

The previous prime is 1609403249. The next prime is 1609403267. The reversal of 1609403260 is 623049061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609403267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1513489 + ... + 1514551.

It is an arithmetic number, because the mean of its divisors is an integer number (38442852).

Almost surely, 2^1609403260 is an apocalyptic number.

1609403260 is a gapful number since it is divisible by the number (10) 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 1609403260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1845256896).

1609403260 is an abundant number, since it is smaller than the sum of its proper divisors (2081110532).

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

1609403260 is a wasteful number, since it uses less digits than its factorization.

1609403260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1609403260 is about 40117.3685577706. The cubic root of 1609403260 is about 1171.8938961670.

The spelling of 1609403260 in words is "one billion, six hundred nine million, four hundred three thousand, two hundred sixty".