1215948338 has 16 divisors (see below), whose sum is σ = 2002916160. Its totient is φ = 549042000.

The previous prime is 1215948317. The next prime is 1215948359. The reversal of 1215948338 is 8338495121.

It is an interprime number because it is at equal distance from previous prime (1215948317) and next prime (1215948359).

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, 179693 + ... + 186336.

It is an arithmetic number, because the mean of its divisors is an integer number (125182260).

Almost surely, 2^1215948338 is an apocalyptic number.

1215948338 is a deficient number, since it is larger than the sum of its proper divisors (786967822).

1215948338 is a wasteful number, since it uses less digits than its factorization.

1215948338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366193.

The product of its digits is 207360, while the sum is 44.

The square root of 1215948338 is about 34870.4507857297. The cubic root of 1215948338 is about 1067.3455435986.

The spelling of 1215948338 in words is "one billion, two hundred fifteen million, nine hundred forty-eight thousand, three hundred thirty-eight".