1388011 has 2 divisors, whose sum is σ = 1388012. Its totient is φ = 1388010.

The previous prime is 1388003. The next prime is 1388021. The reversal of 1388011 is 1108831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1388011 - 2³ = 1388003 is a prime.

It is a super-2 number, since 2×1388011² = 3853149072242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1388021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694005 + 694006.

It is an arithmetic number, because the mean of its divisors is an integer number (694006).

2^1388011 is an apocalyptic number.

1388011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388011 is an equidigital number, since it uses as much as digits as its factorization.

1388011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1388011 is about 1178.1387863915. The cubic root of 1388011 is about 111.5486458825.

The spelling of 1388011 in words is "one million, three hundred eighty-eight thousand, eleven".