1215495168 has 88 divisors (see below), whose sum is σ = 3380792448. Its totient is φ = 387526656.

The previous prime is 1215495157. The next prime is 1215495181. The reversal of 1215495168 is 8615945121.

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, 62055 + ... + 79257.

It is an arithmetic number, because the mean of its divisors is an integer number (38418096).

Almost surely, 2^1215495168 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 1215495168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1690396224).

1215495168 is an abundant number, since it is smaller than the sum of its proper divisors (2165297280).

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

1215495168 is a wasteful number, since it uses less digits than its factorization.

1215495168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17249 (or 17231 counting only the distinct ones).

The product of its digits is 86400, while the sum is 42.

The square root of 1215495168 is about 34863.9522716516. The cubic root of 1215495168 is about 1067.2129313086.

The spelling of 1215495168 in words is "one billion, two hundred fifteen million, four hundred ninety-five thousand, one hundred sixty-eight".