1385611983 has 24 divisors (see below), whose sum is σ = 2299355136. Its totient is φ = 787626000.

The previous prime is 1385611973. The next prime is 1385612003. The reversal of 1385611983 is 3891165831.

It is a happy number.

1385611983 is a `hidden beast` number, since 1 + 3 + 8 + 561 + 1 + 9 + 83 = 666.

1385611983 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1385611983 - 2¹² = 1385607887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385611963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45543 + ... + 69608.

It is an arithmetic number, because the mean of its divisors is an integer number (95806464).

Almost surely, 2^1385611983 is an apocalyptic number.

1385611983 is a deficient number, since it is larger than the sum of its proper divisors (913743153).

1385611983 is a wasteful number, since it uses less digits than its factorization.

1385611983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115355 (or 115352 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 1385611983 is about 37223.8093563783. The cubic root of 1385611983 is about 1114.8434249629.

The spelling of 1385611983 in words is "one billion, three hundred eighty-five million, six hundred eleven thousand, nine hundred eighty-three".