1601478759 has 4 divisors (see below), whose sum is σ = 2135305016. Its totient is φ = 1067652504.

The previous prime is 1601478743. The next prime is 1601478787. The reversal of 1601478759 is 9578741061.

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

It is not a de Polignac number, because 1601478759 - 2⁴ = 1601478743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601478709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266913124 + ... + 266913129.

It is an arithmetic number, because the mean of its divisors is an integer number (533826254).

Almost surely, 2^1601478759 is an apocalyptic number.

1601478759 is a deficient number, since it is larger than the sum of its proper divisors (533826257).

1601478759 is an equidigital number, since it uses as much as digits as its factorization.

1601478759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533826256.

The product of its (nonzero) digits is 423360, while the sum is 48.

The square root of 1601478759 is about 40018.4802185190. The cubic root of 1601478759 is about 1169.9673107968.

The spelling of 1601478759 in words is "one billion, six hundred one million, four hundred seventy-eight thousand, seven hundred fifty-nine".