1388285123 has 4 divisors (see below), whose sum is σ = 1388553288. Its totient is φ = 1388016960.

The previous prime is 1388285113. The next prime is 1388285131. The reversal of 1388285123 is 3215828831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1388285123 - 2⁸ = 1388284867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388285113) 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 in 3 ways as a sum of consecutive naturals, for example, 126161 + ... + 136722.

It is an arithmetic number, because the mean of its divisors is an integer number (347138322).

Almost surely, 2^1388285123 is an apocalyptic number.

1388285123 is a deficient number, since it is larger than the sum of its proper divisors (268165).

1388285123 is an equidigital number, since it uses as much as digits as its factorization.

1388285123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268164.

The product of its digits is 92160, while the sum is 41.

The square root of 1388285123 is about 37259.6983750540. The cubic root of 1388285123 is about 1115.5598877256.

The spelling of 1388285123 in words is "one billion, three hundred eighty-eight million, two hundred eighty-five thousand, one hundred twenty-three".