1608562801 has 4 divisors (see below), whose sum is σ = 1608853104. Its totient is φ = 1608272500.

The previous prime is 1608562793. The next prime is 1608562817. The reversal of 1608562801 is 1082658061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1082658061 = 4049 ⋅267389.

It is a cyclic number.

It is not a de Polignac number, because 1608562801 - 2³ = 1608562793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1608562841) 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, 136675 + ... + 147976.

It is an arithmetic number, because the mean of its divisors is an integer number (402213276).

Almost surely, 2^1608562801 is an apocalyptic number.

It is an amenable number.

1608562801 is a deficient number, since it is larger than the sum of its proper divisors (290303).

1608562801 is an equidigital number, since it uses as much as digits as its factorization.

1608562801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290302.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 1608562801 is about 40106.8921882511. The cubic root of 1608562801 is about 1171.6898660366.

The spelling of 1608562801 in words is "one billion, six hundred eight million, five hundred sixty-two thousand, eight hundred one".