1216344152 has 16 divisors (see below), whose sum is σ = 2414801160. Its totient is φ = 572397184.

The previous prime is 1216344137. The next prime is 1216344163. The reversal of 1216344152 is 2514436121.

It is a super-2 number, since 2×1216344152² = 2958986192209198208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4471718 + ... + 4471989.

Almost surely, 2^1216344152 is an apocalyptic number.

It is an amenable number.

1216344152 is a deficient number, since it is larger than the sum of its proper divisors (1198457008).

1216344152 is a wasteful number, since it uses less digits than its factorization.

1216344152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8943730 (or 8943726 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 1216344152 is about 34876.1258169539. The cubic root of 1216344152 is about 1067.4613447017.

The spelling of 1216344152 in words is "one billion, two hundred sixteen million, three hundred forty-four thousand, one hundred fifty-two".