1602039395989 has 4 divisors (see below), whose sum is σ = 1604538678060. Its totient is φ = 1599540113920.

The previous prime is 1602039395911. The next prime is 1602039396007. The reversal of 1602039395989 is 9895939302061.

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

It can be written as a sum of positive squares in 2 ways, for example, as 913521143089 + 688518252900 = 955783^2 + 829770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1602039395989 - 2³³ = 1593449461397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1602039395989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1602039395909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249640074 + ... + 1249641355.

It is an arithmetic number, because the mean of its divisors is an integer number (401134669515).

Almost surely, 2^{1602039395989} is an apocalyptic number.

It is an amenable number.

1602039395989 is a deficient number, since it is larger than the sum of its proper divisors (2499282071).

1602039395989 is an equidigital number, since it uses as much as digits as its factorization.

1602039395989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499282070.

The product of its (nonzero) digits is 28343520, while the sum is 64.

The spelling of 1602039395989 in words is "one trillion, six hundred two billion, thirty-nine million, three hundred ninety-five thousand, nine hundred eighty-nine".