1385441983 has 16 divisors (see below), whose sum is σ = 1459155456. Its totient is φ = 1314069120.

The previous prime is 1385441977. The next prime is 1385442001. The reversal of 1385441983 is 3891445831.

It is a cyclic number.

It is not a de Polignac number, because 1385441983 - 2⁵ = 1385441951 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 (1385441903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262135 + ... + 267367.

It is an arithmetic number, because the mean of its divisors is an integer number (91197216).

Almost surely, 2^1385441983 is an apocalyptic number.

1385441983 is a deficient number, since it is larger than the sum of its proper divisors (73713473).

1385441983 is a wasteful number, since it uses less digits than its factorization.

1385441983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454.

The product of its digits is 414720, while the sum is 46.

The square root of 1385441983 is about 37221.5258016111. The cubic root of 1385441983 is about 1114.7978299152.

The spelling of 1385441983 in words is "one billion, three hundred eighty-five million, four hundred forty-one thousand, nine hundred eighty-three".