2005634090 has 16 divisors (see below), whose sum is σ = 3611599272. Its totient is φ = 801929664.

The previous prime is 2005634083. The next prime is 2005634093. The reversal of 2005634090 is 904365002.

It can be written as a sum of positive squares in 4 ways, for example, as 1261599361 + 744034729 = 35519^2 + 27277^2 .

It is not an unprimeable number, because it can be changed into a prime (2005634093) 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, 13649 + ... + 64788.

Almost surely, 2^2005634090 is an apocalyptic number.

2005634090 is a deficient number, since it is larger than the sum of its proper divisors (1605965182).

2005634090 is a wasteful number, since it uses less digits than its factorization.

2005634090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81001.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2005634090 is about 44784.3062913785. The cubic root of 2005634090 is about 1261.1030254606.

Adding to 2005634090 its reverse (904365002), we get a palindrome (2909999092).

The spelling of 2005634090 in words is "two billion, five million, six hundred thirty-four thousand, ninety".