2491509390 has 32 divisors (see below), whose sum is σ = 5994272160. Its totient is φ = 662774784.

The previous prime is 2491509331. The next prime is 2491509467. The reversal of 2491509390 is 939051942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89259 + ... + 113798.

It is an arithmetic number, because the mean of its divisors is an integer number (187321005).

Almost surely, 2^2491509390 is an apocalyptic number.

2491509390 is an abundant number, since it is smaller than the sum of its proper divisors (3502762770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2491509390 is a wasteful number, since it uses less digits than its factorization.

2491509390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203476.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 2491509390 is about 49915.0216868630. The cubic root of 2491509390 is about 1355.6705948409.

The spelling of 2491509390 in words is "two billion, four hundred ninety-one million, five hundred nine thousand, three hundred ninety".