2009913693 has 4 divisors (see below), whose sum is σ = 2679884928. Its totient is φ = 1339942460.

The previous prime is 2009913691. The next prime is 2009913707. The reversal of 2009913693 is 3963199002.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 2009913693 - 2¹ = 2009913691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009913691) 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, 334985613 + ... + 334985618.

It is an arithmetic number, because the mean of its divisors is an integer number (669971232).

Almost surely, 2^2009913693 is an apocalyptic number.

It is an amenable number.

2009913693 is a deficient number, since it is larger than the sum of its proper divisors (669971235).

2009913693 is an equidigital number, since it uses as much as digits as its factorization.

2009913693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669971234.

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 2009913693 is about 44832.0609943375. The cubic root of 2009913693 is about 1261.9993647876. Note that the first 3 decimals are identical.

The spelling of 2009913693 in words is "two billion, nine million, nine hundred thirteen thousand, six hundred ninety-three".