1601726436 has 36 divisors (see below), whose sum is σ = 4142970832. Its totient is φ = 521491824.

The previous prime is 1601726431. The next prime is 1601726449. The reversal of 1601726436 is 6346271061.

It is a happy number.

1601726436 is a `hidden beast` number, since 1 + 6 + 0 + 1 + 7 + 2 + 643 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1601726436.

It is not an unprimeable number, because it can be changed into a prime (1601726431) 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 11 ways as a sum of consecutive naturals, for example, 515806 + ... + 518901.

Almost surely, 2^1601726436 is an apocalyptic number.

It is an amenable number.

1601726436 is an abundant number, since it is smaller than the sum of its proper divisors (2541244396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1601726436 is a wasteful number, since it uses less digits than its factorization.

1601726436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034760 (or 1034755 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1601726436 is about 40021.5746316908. The cubic root of 1601726436 is about 1170.0276215263.

Adding to 1601726436 its reverse (6346271061), we get a palindrome (7947997497).

It can be divided in two parts, 160 and 1726436, that added together give a square (1726596 = 1314²).

The spelling of 1601726436 in words is "one billion, six hundred one million, seven hundred twenty-six thousand, four hundred thirty-six".