2002900609 has 4 divisors (see below), whose sum is σ = 2003745604. Its totient is φ = 2002055616.

The previous prime is 2002900597. The next prime is 2002900643. The reversal of 2002900609 is 9060092002.

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 278990209 + 1723910400 = 16703^2 + 41520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002900609 - 2²³ = 1994512001 is a prime.

It is a super-2 number, since 2×2002900609² = 8023221699065141762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002900709) 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, 418932 + ... + 423685.

It is an arithmetic number, because the mean of its divisors is an integer number (500936401).

Almost surely, 2^2002900609 is an apocalyptic number.

It is an amenable number.

2002900609 is a deficient number, since it is larger than the sum of its proper divisors (844995).

2002900609 is an equidigital number, since it uses as much as digits as its factorization.

2002900609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844994.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2002900609 is about 44753.7775947461. Note that the first 3 decimals coincide. The cubic root of 2002900609 is about 1260.5298453995.

The spelling of 2002900609 in words is "two billion, two million, nine hundred thousand, six hundred nine".