1216088634 has 16 divisors (see below), whose sum is σ = 2433244320. Its totient is φ = 405185040.

The previous prime is 1216088611. The next prime is 1216088641. The reversal of 1216088634 is 4368806121.

It is a junction number, because it is equal to n+sod(n) for n = 1216088592 and 1216088601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29244 + ... + 57335.

It is an arithmetic number, because the mean of its divisors is an integer number (152077770).

Almost surely, 2^1216088634 is an apocalyptic number.

1216088634 is an abundant number, since it is smaller than the sum of its proper divisors (1217155686).

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

1216088634 is a wasteful number, since it uses less digits than its factorization.

1216088634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88925.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1216088634 is about 34872.4624023025. The cubic root of 1216088634 is about 1067.3865920946.

The spelling of 1216088634 in words is "one billion, two hundred sixteen million, eighty-eight thousand, six hundred thirty-four".