1216715608 has 16 divisors (see below), whose sum is σ = 2282119560. Its totient is φ = 608150400.

The previous prime is 1216715587. The next prime is 1216715611. The reversal of 1216715608 is 8065176121.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 603 + ... + 49333.

Almost surely, 2^1216715608 is an apocalyptic number.

It is an amenable number.

1216715608 is a deficient number, since it is larger than the sum of its proper divisors (1065403952).

1216715608 is a wasteful number, since it uses less digits than its factorization.

1216715608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51858 (or 51854 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1216715608 is about 34881.4507725811. The cubic root of 1216715608 is about 1067.5699966716.

The spelling of 1216715608 in words is "one billion, two hundred sixteen million, seven hundred fifteen thousand, six hundred eight".