2491538011 has 2 divisors, whose sum is σ = 2491538012. Its totient is φ = 2491538010.

The previous prime is 2491537999. The next prime is 2491538047. The reversal of 2491538011 is 1108351942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2491538011 - 2⁷ = 2491537883 is a prime.

It is a super-2 number, since 2×2491538011² = 12415523320515672242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2491538111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245769005 + 1245769006.

It is an arithmetic number, because the mean of its divisors is an integer number (1245769006).

Almost surely, 2^2491538011 is an apocalyptic number.

2491538011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491538011 is an equidigital number, since it uses as much as digits as its factorization.

2491538011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 2491538011 is about 49915.3083833006. The cubic root of 2491538011 is about 1355.6757858708.

Adding to 2491538011 its reverse (1108351942), we get a palindrome (3599889953).

It can be divided in two parts, 24915 and 38011, that added together give a palindrome (62926).

The spelling of 2491538011 in words is "two billion, four hundred ninety-one million, five hundred thirty-eight thousand, eleven".