1338136379 has 2 divisors, whose sum is σ = 1338136380. Its totient is φ = 1338136378.

The previous prime is 1338136367. The next prime is 1338136391. The reversal of 1338136379 is 9736318331.

It is a balanced prime because it is at equal distance from previous prime (1338136367) and next prime (1338136391).

It is a cyclic number.

It is not a de Polignac number, because 1338136379 - 2⁴ = 1338136363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1338138379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669068189 + 669068190.

It is an arithmetic number, because the mean of its divisors is an integer number (669068190).

Almost surely, 2^1338136379 is an apocalyptic number.

1338136379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338136379 is an equidigital number, since it uses as much as digits as its factorization.

1338136379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 44.

The square root of 1338136379 is about 36580.5464557325. The cubic root of 1338136379 is about 1101.9624414765.

The spelling of 1338136379 in words is "one billion, three hundred thirty-eight million, one hundred thirty-six thousand, three hundred seventy-nine".