1338398093 has 4 divisors (see below), whose sum is σ = 1338516480. Its totient is φ = 1338279708.

The previous prime is 1338398081. The next prime is 1338398101. The reversal of 1338398093 is 3908938331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3908938331 = 18661 ⋅209471.

It is a cyclic number.

It is not a de Polignac number, because 1338398093 - 2²⁴ = 1321620877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338398293) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 40205 + ... + 65522.

It is an arithmetic number, because the mean of its divisors is an integer number (334629120).

Almost surely, 2^1338398093 is an apocalyptic number.

It is an amenable number.

1338398093 is a deficient number, since it is larger than the sum of its proper divisors (118387).

1338398093 is a wasteful number, since it uses less digits than its factorization.

1338398093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118386.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 1338398093 is about 36584.1235100692. The cubic root of 1338398093 is about 1102.0342777515.

The spelling of 1338398093 in words is "one billion, three hundred thirty-eight million, three hundred ninety-eight thousand, ninety-three".