1215438382 has 16 divisors (see below), whose sum is σ = 1878488352. Its totient is φ = 589381920.

The previous prime is 1215438353. The next prime is 1215438391. The reversal of 1215438382 is 2838345121.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 3393 + ... + 49420.

It is an arithmetic number, because the mean of its divisors is an integer number (117405522).

Almost surely, 2^1215438382 is an apocalyptic number.

1215438382 is a deficient number, since it is larger than the sum of its proper divisors (663049970).

1215438382 is a wasteful number, since it uses less digits than its factorization.

1215438382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53163.

The product of its digits is 46080, while the sum is 37.

The square root of 1215438382 is about 34863.1378679545. The cubic root of 1215438382 is about 1067.1963115532.

The spelling of 1215438382 in words is "one billion, two hundred fifteen million, four hundred thirty-eight thousand, three hundred eighty-two".