1338764783 has 2 divisors, whose sum is σ = 1338764784. Its totient is φ = 1338764782.

The previous prime is 1338764767. The next prime is 1338764831. The reversal of 1338764783 is 3874678331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1338764783 - 2⁴ = 1338764767 is a prime.

It is a super-2 number, since 2×1338764783² = 3584582288402074178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338764723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669382391 + 669382392.

It is an arithmetic number, because the mean of its divisors is an integer number (669382392).

Almost surely, 2^1338764783 is an apocalyptic number.

1338764783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338764783 is an equidigital number, since it uses as much as digits as its factorization.

1338764783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 50.

The square root of 1338764783 is about 36589.1347670316. The cubic root of 1338764783 is about 1102.1349124958.

The spelling of 1338764783 in words is "one billion, three hundred thirty-eight million, seven hundred sixty-four thousand, seven hundred eighty-three".