1612089680 has 50 divisors (see below), whose sum is σ = 3804898026. Its totient is φ = 635211456.

The previous prime is 1612089679. The next prime is 1612089691. The reversal of 1612089680 is 869802161.

It can be written as a sum of positive squares in only one way, i.e., 1289671744 + 322417936 = 35912^2 + 17956^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 24061007 + ... + 24061073.

Almost surely, 2^1612089680 is an apocalyptic number.

1612089680 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 1612089680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1902449013).

1612089680 is an abundant number, since it is smaller than the sum of its proper divisors (2192808346).

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

1612089680 is an frugal number, since it uses more digits than its factorization.

1612089680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 1612089680 is about 40150.8366039862. The cubic root of 1612089680 is about 1172.5455764597.

The spelling of 1612089680 in words is "one billion, six hundred twelve million, eighty-nine thousand, six hundred eighty".