2492491609 has 2 divisors, whose sum is σ = 2492491610. Its totient is φ = 2492491608.

The previous prime is 2492491523. The next prime is 2492491619. The reversal of 2492491609 is 9061942942.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2463633225 + 28858384 = 49635^2 + 5372^2 .

It is a cyclic number.

It is not a de Polignac number, because 2492491609 - 2²³ = 2484103001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2492491619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246245804 + 1246245805.

It is an arithmetic number, because the mean of its divisors is an integer number (1246245805).

Almost surely, 2^2492491609 is an apocalyptic number.

It is an amenable number.

2492491609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2492491609 is an equidigital number, since it uses as much as digits as its factorization.

2492491609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 2492491609 is about 49924.8596292468. The cubic root of 2492491609 is about 1355.8487185224.

The spelling of 2492491609 in words is "two billion, four hundred ninety-two million, four hundred ninety-one thousand, six hundred nine".