2496866891 has 4 divisors (see below), whose sum is σ = 2643741432. Its totient is φ = 2349992352.

The previous prime is 2496866887. The next prime is 2496866903. The reversal of 2496866891 is 1986686942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1986686942 = 2 ⋅993343471.

It is a cyclic number.

It is not a de Polignac number, because 2496866891 - 2² = 2496866887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2496866891.

It is not an unprimeable number, because it can be changed into a prime (2496866851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73437245 + ... + 73437278.

It is an arithmetic number, because the mean of its divisors is an integer number (660935358).

Almost surely, 2^2496866891 is an apocalyptic number.

2496866891 is a deficient number, since it is larger than the sum of its proper divisors (146874541).

2496866891 is a wasteful number, since it uses less digits than its factorization.

2496866891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146874540.

The product of its digits is 8957952, while the sum is 59.

The square root of 2496866891 is about 49968.6590874720. The cubic root of 2496866891 is about 1356.6416001972.

The spelling of 2496866891 in words is "two billion, four hundred ninety-six million, eight hundred sixty-six thousand, eight hundred ninety-one".