1215005338 has 4 divisors (see below), whose sum is σ = 1822508010. Its totient is φ = 607502668.

The previous prime is 1215005263. The next prime is 1215005353. The reversal of 1215005338 is 8335005121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1163696769 + 51308569 = 34113^2 + 7163^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303751333 + ... + 303751336.

Almost surely, 2^1215005338 is an apocalyptic number.

1215005338 is a deficient number, since it is larger than the sum of its proper divisors (607502672).

1215005338 is an equidigital number, since it uses as much as digits as its factorization.

1215005338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607502671.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1215005338 is about 34856.9266860978. The cubic root of 1215005338 is about 1067.0695540358.

The spelling of 1215005338 in words is "one billion, two hundred fifteen million, five thousand, three hundred thirty-eight".