2491144193 has 2 divisors, whose sum is σ = 2491144194. Its totient is φ = 2491144192.

The previous prime is 2491144163. The next prime is 2491144217. The reversal of 2491144193 is 3914411942.

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., 1952579344 + 538564849 = 44188^2 + 23207^2 .

It is a cyclic number.

It is not a de Polignac number, because 2491144193 - 2⁶ = 2491144129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2491144163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245572096 + 1245572097.

It is an arithmetic number, because the mean of its divisors is an integer number (1245572097).

Almost surely, 2^2491144193 is an apocalyptic number.

It is an amenable number.

2491144193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491144193 is an equidigital number, since it uses as much as digits as its factorization.

2491144193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 2491144193 is about 49911.3633654702. The cubic root of 2491144193 is about 1355.6043550711.

The spelling of 2491144193 in words is "two billion, four hundred ninety-one million, one hundred forty-four thousand, one hundred ninety-three".