1016605001 has 4 divisors (see below), whose sum is σ = 1017041604. Its totient is φ = 1016168400.

The previous prime is 1016604997. The next prime is 1016605021. The reversal of 1016605001 is 1005066101.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 685182976 + 331422025 = 26176^2 + 18205^2 .

It is a cyclic number.

It is not a de Polignac number, because 1016605001 - 2² = 1016604997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016605021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214790 + ... + 219471.

It is an arithmetic number, because the mean of its divisors is an integer number (254260401).

Almost surely, 2^1016605001 is an apocalyptic number.

It is an amenable number.

1016605001 is a deficient number, since it is larger than the sum of its proper divisors (436603).

1016605001 is an equidigital number, since it uses as much as digits as its factorization.

1016605001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436602.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1016605001 is about 31884.2437733750. The cubic root of 1016605001 is about 1005.5046436329.

The spelling of 1016605001 in words is "one billion, sixteen million, six hundred five thousand, one".