1338252394 has 4 divisors (see below), whose sum is σ = 2007378594. Its totient is φ = 669126196.

The previous prime is 1338252379. The next prime is 1338252397. The reversal of 1338252394 is 4932528331.

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., 1326780625 + 11471769 = 36425^2 + 3387^2 .

It is not an unprimeable number, because it can be changed into a prime (1338252397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334563097 + ... + 334563100.

Almost surely, 2^1338252394 is an apocalyptic number.

1338252394 is a deficient number, since it is larger than the sum of its proper divisors (669126200).

1338252394 is an equidigital number, since it uses as much as digits as its factorization.

1338252394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669126199.

The product of its digits is 155520, while the sum is 40.

The square root of 1338252394 is about 36582.1321685874. The cubic root of 1338252394 is about 1101.9942868798.

The spelling of 1338252394 in words is "one billion, three hundred thirty-eight million, two hundred fifty-two thousand, three hundred ninety-four".