1388358047 has 2 divisors, whose sum is σ = 1388358048. Its totient is φ = 1388358046.

The previous prime is 1388358017. The next prime is 1388358053. The reversal of 1388358047 is 7408538831.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7408538831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1388358047 - 2¹⁶ = 1388292511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1388357992 and 1388358010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1388358017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694179023 + 694179024.

It is an arithmetic number, because the mean of its divisors is an integer number (694179024).

Almost surely, 2^1388358047 is an apocalyptic number.

1388358047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388358047 is an equidigital number, since it uses as much as digits as its factorization.

1388358047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 1388358047 is about 37260.6769530560. The cubic root of 1388358047 is about 1115.5794201362.

The spelling of 1388358047 in words is "one billion, three hundred eighty-eight million, three hundred fifty-eight thousand, forty-seven".