5000001605 has 4 divisors (see below), whose sum is σ = 6000001932. Its totient is φ = 4000001280.

The previous prime is 5000001599. The next prime is 5000001607. The reversal of 5000001605 is 5061000005.

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 3463204801 + 1536796804 = 58849^2 + 39202^2 .

It is not a de Polignac number, because 5000001605 - 2⁶ = 5000001541 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 (5000001607) 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, 500000156 + ... + 500000165.

It is an arithmetic number, because the mean of its divisors is an integer number (1500000483).

Almost surely, 2^5000001605 is an apocalyptic number.

It is an amenable number.

5000001605 is a deficient number, since it is larger than the sum of its proper divisors (1000000327).

5000001605 is a wasteful number, since it uses less digits than its factorization.

5000001605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000000326.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 5000001605 is about 70710.6894677177. The cubic root of 5000001605 is about 1709.9761296441.

The spelling of 5000001605 in words is "five billion, one thousand, six hundred five".