1338963403 has 4 divisors (see below), whose sum is σ = 1341317160. Its totient is φ = 1336609648.

The previous prime is 1338963397. The next prime is 1338963419. The reversal of 1338963403 is 3043698331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3043698331 = 19 ⋅160194649.

It is a cyclic number.

It is not a de Polignac number, because 1338963403 - 2²⁹ = 802092491 is a prime.

It is a super-3 number, since 3×1338963403³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338966403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176025 + ... + 1177162.

It is an arithmetic number, because the mean of its divisors is an integer number (335329290).

Almost surely, 2^1338963403 is an apocalyptic number.

1338963403 is a deficient number, since it is larger than the sum of its proper divisors (2353757).

1338963403 is an equidigital number, since it uses as much as digits as its factorization.

1338963403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353756.

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 1338963403 is about 36591.8488600945. The cubic root of 1338963403 is about 1102.1894142809.

The spelling of 1338963403 in words is "one billion, three hundred thirty-eight million, nine hundred sixty-three thousand, four hundred three".