2009913601 has 2 divisors, whose sum is σ = 2009913602. Its totient is φ = 2009913600.

The previous prime is 2009913589. The next prime is 2009913629. The reversal of 2009913601 is 1063199002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1556223601 + 453690000 = 39449^2 + 21300^2 .

It is a cyclic number.

It is not a de Polignac number, because 2009913601 - 2⁹ = 2009913089 is a prime.

It is not a weakly prime, because it can be changed into another prime (2009913691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004956800 + 1004956801.

It is an arithmetic number, because the mean of its divisors is an integer number (1004956801).

Almost surely, 2^2009913601 is an apocalyptic number.

It is an amenable number.

2009913601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009913601 is an equidigital number, since it uses as much as digits as its factorization.

2009913601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 2009913601 is about 44832.0599682861. The cubic root of 2009913601 is about 1261.9993455324. Note that the first 3 decimals are identical.

The spelling of 2009913601 in words is "two billion, nine million, nine hundred thirteen thousand, six hundred one".