2605491492 has 12 divisors (see below), whose sum is σ = 6079480176. Its totient is φ = 868497160.

The previous prime is 2605491491. The next prime is 2605491509. The reversal of 2605491492 is 2941945062.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2605491491) 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, 108562134 + ... + 108562157.

It is an arithmetic number, because the mean of its divisors is an integer number (506623348).

Almost surely, 2^2605491492 is an apocalyptic number.

It is an amenable number.

2605491492 is an abundant number, since it is smaller than the sum of its proper divisors (3473988684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2605491492 is a wasteful number, since it uses less digits than its factorization.

2605491492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217124298 (or 217124296 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 2605491492 is about 51044.0152417499. The cubic root of 2605491492 is about 1376.0362862535.

The spelling of 2605491492 in words is "two billion, six hundred five million, four hundred ninety-one thousand, four hundred ninety-two".