1385475839 has 32 divisors (see below), whose sum is σ = 1650309120. Its totient is φ = 1149120000.

The previous prime is 1385475829. The next prime is 1385475853. The reversal of 1385475839 is 9385745831.

It is not a de Polignac number, because 1385475839 - 2²⁴ = 1368698623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385475829) 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 in 31 ways as a sum of consecutive naturals, for example, 1820219 + ... + 1820979.

It is an arithmetic number, because the mean of its divisors is an integer number (51572160).

Almost surely, 2^1385475839 is an apocalyptic number.

1385475839 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1385475839 is a deficient number, since it is larger than the sum of its proper divisors (264833281).

1385475839 is a wasteful number, since it uses less digits than its factorization.

1385475839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103.

The product of its digits is 3628800, while the sum is 53.

The square root of 1385475839 is about 37221.9805894313. The cubic root of 1385475839 is about 1114.8069106005.

The spelling of 1385475839 in words is "one billion, three hundred eighty-five million, four hundred seventy-five thousand, eight hundred thirty-nine".