1596801601 has 4 divisors (see below), whose sum is σ = 1598102100. Its totient is φ = 1595501104.

The previous prime is 1596801581. The next prime is 1596801623. The reversal of 1596801601 is 1061086951.

It is a Cunningham number, because it is equal to 39960²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1061086951 = 257 ⋅4128743.

It can be written as a sum of positive squares in 2 ways, for example, as 1576090000 + 20711601 = 39700^2 + 4551^2 .

It is a cyclic number.

It is not a de Polignac number, because 1596801601 - 2¹³ = 1596793409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1596801631) 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, 648406 + ... + 650863.

It is an arithmetic number, because the mean of its divisors is an integer number (399525525).

Almost surely, 2^1596801601 is an apocalyptic number.

It is an amenable number.

1596801601 is a deficient number, since it is larger than the sum of its proper divisors (1300499).

1596801601 is a wasteful number, since it uses less digits than its factorization.

1596801601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300498.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 1596801601 is about 39960.0000125125. Note that the first 4 decimals coincide. The cubic root of 1596801601 is about 1168.8272274515.

The spelling of 1596801601 in words is "one billion, five hundred ninety-six million, eight hundred one thousand, six hundred one".