1390338919 has 2 divisors, whose sum is σ = 1390338920. Its totient is φ = 1390338918.

The previous prime is 1390338841. The next prime is 1390338941. The reversal of 1390338919 is 9198330931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1390338919 - 2⁹ = 1390338407 is a prime.

It is a super-2 number, since 2×1390338919² = 3866084619372177122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1390338959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695169459 + 695169460.

It is an arithmetic number, because the mean of its divisors is an integer number (695169460).

Almost surely, 2^1390338919 is an apocalyptic number.

1390338919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390338919 is an equidigital number, since it uses as much as digits as its factorization.

1390338919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 1390338919 is about 37287.2487453821. The cubic root of 1390338919 is about 1116.1097275986.

The spelling of 1390338919 in words is "one billion, three hundred ninety million, three hundred thirty-eight thousand, nine hundred nineteen".