1214511516 has 96 divisors (see below), whose sum is σ = 3217536000. Its totient is φ = 396083520.

The previous prime is 1214511497. The next prime is 1214511593. The reversal of 1214511516 is 6151154121.

1214511516 is a `hidden beast` number, since 1 + 2 + 145 + 1 + 1 + 516 = 666.

1214511516 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1214511516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1142001 + ... + 1143063.

It is an arithmetic number, because the mean of its divisors is an integer number (33516000).

Almost surely, 2^1214511516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1214511516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1608768000).

1214511516 is an abundant number, since it is smaller than the sum of its proper divisors (2003024484).

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

1214511516 is a wasteful number, since it uses less digits than its factorization.

1214511516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 1288 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 1214511516 is about 34849.8424099737. The cubic root of 1214511516 is about 1066.9249692590.

Adding to 1214511516 its reverse (6151154121), we get a palindrome (7365665637).

The spelling of 1214511516 in words is "one billion, two hundred fourteen million, five hundred eleven thousand, five hundred sixteen".