1209106080 has 288 divisors, whose sum is σ = 5078795904. Its totient is φ = 255080448.

The previous prime is 1209106009. The next prime is 1209106109. The reversal of 1209106080 is 806019021.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126427 + ... + 135653.

It is an arithmetic number, because the mean of its divisors is an integer number (17634708).

Almost surely, 2^1209106080 is an apocalyptic number.

1209106080 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 1209106080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2539397952).

1209106080 is an abundant number, since it is smaller than the sum of its proper divisors (3869689824).

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

1209106080 is a wasteful number, since it uses less digits than its factorization.

1209106080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9268 (or 9257 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1209106080 is about 34772.2026912302. The cubic root of 1209106080 is about 1065.3397580269.

The spelling of 1209106080 in words is "one billion, two hundred nine million, one hundred six thousand, eighty".