2905081913 has 8 divisors (see below), whose sum is σ = 2923472136. Its totient is φ = 2886710400.

The previous prime is 2905081897. The next prime is 2905081919. The reversal of 2905081913 is 3191805092.

It can be written as a sum of positive squares in 4 ways, for example, as 727273024 + 2177808889 = 26968^2 + 46667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2905081913 - 2⁴ = 2905081897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2905081919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432803 + ... + 439463.

It is an arithmetic number, because the mean of its divisors is an integer number (365434017).

Almost surely, 2^2905081913 is an apocalyptic number.

It is an amenable number.

2905081913 is a deficient number, since it is larger than the sum of its proper divisors (18390223).

2905081913 is a wasteful number, since it uses less digits than its factorization.

2905081913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9355.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 2905081913 is about 53898.8117958086. The cubic root of 2905081913 is about 1426.8756526750.

The spelling of 2905081913 in words is "two billion, nine hundred five million, eighty-one thousand, nine hundred thirteen".