2491749026 has 16 divisors (see below), whose sum is σ = 4026019200. Its totient is φ = 1149784848.

The previous prime is 2491749011. The next prime is 2491749067. The reversal of 2491749026 is 6209471942.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164855 + ... + 179333.

It is an arithmetic number, because the mean of its divisors is an integer number (251626200).

Almost surely, 2^2491749026 is an apocalyptic number.

2491749026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2491749026 is a deficient number, since it is larger than the sum of its proper divisors (1534270174).

2491749026 is a wasteful number, since it uses less digits than its factorization.

2491749026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21113.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 2491749026 is about 49917.4220688529. The cubic root of 2491749026 is about 1355.7140567232.

The spelling of 2491749026 in words is "two billion, four hundred ninety-one million, seven hundred forty-nine thousand, twenty-six".