1216085298 has 32 divisors (see below), whose sum is σ = 2526093312. Its totient is φ = 389869200.

The previous prime is 1216085287. The next prime is 1216085303. The reversal of 1216085298 is 8925806121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10263 + ... + 50373.

It is an arithmetic number, because the mean of its divisors is an integer number (78940416).

Almost surely, 2^1216085298 is an apocalyptic number.

1216085298 is an abundant number, since it is smaller than the sum of its proper divisors (1310008014).

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

1216085298 is a wasteful number, since it uses less digits than its factorization.

1216085298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40310.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 1216085298 is about 34872.4145708323. The cubic root of 1216085298 is about 1067.3856160680.

The spelling of 1216085298 in words is "one billion, two hundred sixteen million, eighty-five thousand, two hundred ninety-eight".