2491741465 has 4 divisors (see below), whose sum is σ = 2990089764. Its totient is φ = 1993393168.

The previous prime is 2491741429. The next prime is 2491741489. The reversal of 2491741465 is 5641471942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5641471942 = 2 ⋅2820735971.

It can be written as a sum of positive squares in 2 ways, for example, as 1146025609 + 1345715856 = 33853^2 + 36684^2 .

It is a cyclic number.

It is not a de Polignac number, because 2491741465 - 2⁷ = 2491741337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249174142 + ... + 249174151.

It is an arithmetic number, because the mean of its divisors is an integer number (747522441).

Almost surely, 2^2491741465 is an apocalyptic number.

It is an amenable number.

2491741465 is a deficient number, since it is larger than the sum of its proper divisors (498348299).

2491741465 is an equidigital number, since it uses as much as digits as its factorization.

2491741465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498348298.

The product of its digits is 241920, while the sum is 43.

The square root of 2491741465 is about 49917.3463337145. The cubic root of 2491741465 is about 1355.7126854556.

The spelling of 2491741465 in words is "two billion, four hundred ninety-one million, seven hundred forty-one thousand, four hundred sixty-five".