1601435133 has 12 divisors (see below), whose sum is σ = 2315664988. Its totient is φ = 1066478400.

The previous prime is 1601435123. The next prime is 1601435153. The reversal of 1601435133 is 3315341061.

1601435133 is a `hidden beast` number, since 1 + 6 + 0 + 143 + 513 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 890306244 + 711128889 = 29838^2 + 26667^2 .

It is not a de Polignac number, because 1601435133 - 2²¹ = 1599337981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1601435097 and 1601435106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601435123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86518 + ... + 103383.

Almost surely, 2^1601435133 is an apocalyptic number.

It is an amenable number.

1601435133 is a deficient number, since it is larger than the sum of its proper divisors (714229855).

1601435133 is a wasteful number, since it uses less digits than its factorization.

1601435133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190844 (or 190841 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1601435133 is about 40017.9351416337. The cubic root of 1601435133 is about 1169.9566869787.

Adding to 1601435133 its reverse (3315341061), we get a palindrome (4916776194).

The spelling of 1601435133 in words is "one billion, six hundred one million, four hundred thirty-five thousand, one hundred thirty-three".