1601570879 has 4 divisors (see below), whose sum is σ = 1602150384. Its totient is φ = 1600991376.

The previous prime is 1601570843. The next prime is 1601570909. The reversal of 1601570879 is 9780751061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9780751061 = 43 ⋅227459327.

It is a cyclic number.

It is not a de Polignac number, because 1601570879 - 2¹⁶ = 1601505343 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 (1601573879) 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, 285587 + ... + 291140.

It is an arithmetic number, because the mean of its divisors is an integer number (400537596).

Almost surely, 2^1601570879 is an apocalyptic number.

1601570879 is a deficient number, since it is larger than the sum of its proper divisors (579505).

1601570879 is an equidigital number, since it uses as much as digits as its factorization.

1601570879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579504.

The product of its (nonzero) digits is 105840, while the sum is 44.

The square root of 1601570879 is about 40019.6311702145. The cubic root of 1601570879 is about 1169.9897432563.

The spelling of 1601570879 in words is "one billion, six hundred one million, five hundred seventy thousand, eight hundred seventy-nine".