1601335089 has 20 divisors (see below), whose sum is σ = 2404535716. Its totient is φ = 1062014976.

The previous prime is 1601335037. The next prime is 1601335117. The reversal of 1601335089 is 9805331061.

It is a happy number.

1601335089 is a `hidden beast` number, since 16 + 0 + 133 + 508 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 771895089 + 829440000 = 27783^2 + 28800^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1601335089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601835089) 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 19 ways as a sum of consecutive naturals, for example, 35584 + ... + 66849.

Almost surely, 2^1601335089 is an apocalyptic number.

It is an amenable number.

1601335089 is a deficient number, since it is larger than the sum of its proper divisors (803200627).

1601335089 is a wasteful number, since it uses less digits than its factorization.

1601335089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102638 (or 102629 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1601335089 is about 40016.6851325794. The cubic root of 1601335089 is about 1169.9323235016.

The spelling of 1601335089 in words is "one billion, six hundred one million, three hundred thirty-five thousand, eighty-nine".