1209082986 has 12 divisors (see below), whose sum is σ = 2619679842. Its totient is φ = 403027656.

The previous prime is 1209082909. The next prime is 1209082997. The reversal of 1209082986 is 6892809021.

It can be written as a sum of positive squares in only one way, i.e., 653773761 + 555309225 = 25569^2 + 23565^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33585621 + ... + 33585656.

Almost surely, 2^1209082986 is an apocalyptic number.

1209082986 is an abundant number, since it is smaller than the sum of its proper divisors (1410596856).

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

1209082986 is a wasteful number, since it uses less digits than its factorization.

1209082986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67171285 (or 67171282 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1209082986 is about 34771.8706140466. The cubic root of 1209082986 is about 1065.3329752989.

The spelling of 1209082986 in words is "one billion, two hundred nine million, eighty-two thousand, nine hundred eighty-six".