1209082512 has 40 divisors (see below), whose sum is σ = 3407415840. Its totient is φ = 366388480.

The previous prime is 1209082453. The next prime is 1209082531. The reversal of 1209082512 is 2152809021.

It is a self number, because there is not a number n which added to its sum of digits gives 1209082512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1144437 + ... + 1145492.

It is an arithmetic number, because the mean of its divisors is an integer number (85185396).

Almost surely, 2^1209082512 is an apocalyptic number.

1209082512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1209082512 is an abundant number, since it is smaller than the sum of its proper divisors (2198333328).

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

1209082512 is a wasteful number, since it uses less digits than its factorization.

1209082512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289951 (or 2289945 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1209082512 is about 34771.8637981918. The cubic root of 1209082512 is about 1065.3328360838.

The spelling of 1209082512 in words is "one billion, two hundred nine million, eighty-two thousand, five hundred twelve".