1338828215 has 4 divisors (see below), whose sum is σ = 1606593864. Its totient is φ = 1071062568.

The previous prime is 1338828209. The next prime is 1338828233. The reversal of 1338828215 is 5128288331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5128288331 = 61463 ⋅83437.

It is a cyclic number.

It is not a de Polignac number, because 1338828215 - 2⁶ = 1338828151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133882817 + ... + 133882826.

It is an arithmetic number, because the mean of its divisors is an integer number (401648466).

Almost surely, 2^1338828215 is an apocalyptic number.

1338828215 is a deficient number, since it is larger than the sum of its proper divisors (267765649).

1338828215 is an equidigital number, since it uses as much as digits as its factorization.

1338828215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267765648.

The product of its digits is 92160, while the sum is 41.

The square root of 1338828215 is about 36590.0015714676. The cubic root of 1338828215 is about 1102.1523189685.

The spelling of 1338828215 in words is "one billion, three hundred thirty-eight million, eight hundred twenty-eight thousand, two hundred fifteen".