1209092012 has 24 divisors (see below), whose sum is σ = 2190291600. Its totient is φ = 583321536.

The previous prime is 1209091997. The next prime is 1209092023. The reversal of 1209092012 is 2102909021.

It is a happy number.

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, 274943 + ... + 279305.

It is an arithmetic number, because the mean of its divisors is an integer number (91262150).

Almost surely, 2^1209092012 is an apocalyptic number.

It is an amenable number.

1209092012 is a deficient number, since it is larger than the sum of its proper divisors (981199588).

1209092012 is a wasteful number, since it uses less digits than its factorization.

1209092012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6785 (or 6783 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1209092012 is about 34772.0004026228. Note that the first 3 decimals coincide. The cubic root of 1209092012 is about 1065.3356262533.

The spelling of 1209092012 in words is "one billion, two hundred nine million, ninety-two thousand, twelve".