1363121338 has 4 divisors (see below), whose sum is σ = 2044682010. Its totient is φ = 681560668.

The previous prime is 1363121327. The next prime is 1363121359. The reversal of 1363121338 is 8331213631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8331213631 = 13 ⋅640862587.

It can be written as a sum of positive squares in only one way, i.e., 934341489 + 428779849 = 30567^2 + 20707^2 .

It is a super-2 number, since 2×1363121338² = 3716199564221820488, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340780333 + ... + 340780336.

Almost surely, 2^1363121338 is an apocalyptic number.

1363121338 is a deficient number, since it is larger than the sum of its proper divisors (681560672).

1363121338 is an equidigital number, since it uses as much as digits as its factorization.

1363121338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681560671.

The product of its digits is 7776, while the sum is 31.

The square root of 1363121338 is about 36920.4731551479. The cubic root of 1363121338 is about 1108.7786089172.

Adding to 1363121338 its reverse (8331213631), we get a palindrome (9694334969).

It can be divided in two parts, 13631 and 21338, that added together give a square (34969 = 187²).

The spelling of 1363121338 in words is "one billion, three hundred sixty-three million, one hundred twenty-one thousand, three hundred thirty-eight".