1216515414 has 16 divisors (see below), whose sum is σ = 2433486528. Its totient is φ = 405429192.

The previous prime is 1216515401. The next prime is 1216515431. The reversal of 1216515414 is 4145156121.

It is a super-3 number, since 3×1216515414³ (a number of 28 digits) contains 333 as substring.

It is a congruent 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, 22789 + ... + 54335.

It is an arithmetic number, because the mean of its divisors is an integer number (152092908).

Almost surely, 2^1216515414 is an apocalyptic number.

1216515414 is an abundant number, since it is smaller than the sum of its proper divisors (1216971114).

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

1216515414 is a wasteful number, since it uses less digits than its factorization.

1216515414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37979.

The product of its digits is 4800, while the sum is 30.

The square root of 1216515414 is about 34878.5810204486. The cubic root of 1216515414 is about 1067.5114420871.

The spelling of 1216515414 in words is "one billion, two hundred sixteen million, five hundred fifteen thousand, four hundred fourteen".