1385253043 has 4 divisors (see below), whose sum is σ = 1414726560. Its totient is φ = 1355779528.

The previous prime is 1385253029. The next prime is 1385253047. The reversal of 1385253043 is 3403525831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1385253043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1385253047) 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 in 3 ways as a sum of consecutive naturals, for example, 14736688 + ... + 14736781.

It is an arithmetic number, because the mean of its divisors is an integer number (353681640).

Almost surely, 2^1385253043 is an apocalyptic number.

1385253043 is a deficient number, since it is larger than the sum of its proper divisors (29473517).

1385253043 is an equidigital number, since it uses as much as digits as its factorization.

1385253043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29473516.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 1385253043 is about 37218.9876675871. The cubic root of 1385253043 is about 1114.7471506662.

Adding to 1385253043 its reverse (3403525831), we get a palindrome (4788778874).

The spelling of 1385253043 in words is "one billion, three hundred eighty-five million, two hundred fifty-three thousand, forty-three".