1338574819 has 2 divisors, whose sum is σ = 1338574820. Its totient is φ = 1338574818.

The previous prime is 1338574807. The next prime is 1338574841. The reversal of 1338574819 is 9184758331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1338574819 - 2¹¹ = 1338572771 is a prime.

It is a super-2 number, since 2×1338574819² = 3583565092121765522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1338574859) 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 as a sum of consecutive naturals, namely, 669287409 + 669287410.

It is an arithmetic number, because the mean of its divisors is an integer number (669287410).

Almost surely, 2^1338574819 is an apocalyptic number.

1338574819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338574819 is an equidigital number, since it uses as much as digits as its factorization.

1338574819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 49.

The square root of 1338574819 is about 36586.5387676943. The cubic root of 1338574819 is about 1102.0827808935.

The spelling of 1338574819 in words is "one billion, three hundred thirty-eight million, five hundred seventy-four thousand, eight hundred nineteen".