2491018055 has 32 divisors (see below), whose sum is σ = 3108568320. Its totient is φ = 1915280640.

The previous prime is 2491018043. The next prime is 2491018067. The reversal of 2491018055 is 5508101942.

It is an interprime number because it is at equal distance from previous prime (2491018043) and next prime (2491018067).

It is not a de Polignac number, because 2491018055 - 2⁸ = 2491017799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2820644 + ... + 2821526.

It is an arithmetic number, because the mean of its divisors is an integer number (97142760).

Almost surely, 2^2491018055 is an apocalyptic number.

2491018055 is a deficient number, since it is larger than the sum of its proper divisors (617550265).

2491018055 is a wasteful number, since it uses less digits than its factorization.

2491018055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 2491018055 is about 49910.0997294135. The cubic root of 2491018055 is about 1355.5814745397.

Adding to 2491018055 its reverse (5508101942), we get a palindrome (7999119997).

The spelling of 2491018055 in words is "two billion, four hundred ninety-one million, eighteen thousand, fifty-five".