2491135757 has 8 divisors (see below), whose sum is σ = 2811313440. Its totient is φ = 2186576560.

The previous prime is 2491135729. The next prime is 2491135763. The reversal of 2491135757 is 7575311942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2491135757 - 2¹⁰ = 2491134733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491135057) 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, 3904283 + ... + 3904920.

It is an arithmetic number, because the mean of its divisors is an integer number (351414180).

Almost surely, 2^2491135757 is an apocalyptic number.

It is an amenable number.

2491135757 is a deficient number, since it is larger than the sum of its proper divisors (320177683).

2491135757 is a wasteful number, since it uses less digits than its factorization.

2491135757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809243.

The product of its digits is 264600, while the sum is 44.

The square root of 2491135757 is about 49911.2788555853. The cubic root of 2491135757 is about 1355.6028248651.

The spelling of 2491135757 in words is "two billion, four hundred ninety-one million, one hundred thirty-five thousand, seven hundred fifty-seven".