1215144414 has 96 divisors (see below), whose sum is σ = 2927957760. Its totient is φ = 361152000.

The previous prime is 1215144407. The next prime is 1215144419. The reversal of 1215144414 is 4144415121.

It is a happy number.

1215144414 is a `hidden beast` number, since 1 + 215 + 1 + 4 + 441 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215144419) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2899897 + ... + 2900315.

It is an arithmetic number, because the mean of its divisors is an integer number (30499560).

Almost surely, 2^1215144414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1215144414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463978880).

1215144414 is an abundant number, since it is smaller than the sum of its proper divisors (1712813346).

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

1215144414 is a wasteful number, since it uses less digits than its factorization.

1215144414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 683 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 1215144414 is about 34858.9215840077. The cubic root of 1215144414 is about 1067.1102666425.

Adding to 1215144414 its reverse (4144415121), we get a palindrome (5359559535).

It can be divided in two parts, 12151 and 44414, that added together give a palindrome (56565).

The spelling of 1215144414 in words is "one billion, two hundred fifteen million, one hundred forty-four thousand, four hundred fourteen".