2491538002 has 4 divisors (see below), whose sum is σ = 3737307006. Its totient is φ = 1245769000.

The previous prime is 2491537999. The next prime is 2491538011. The reversal of 2491538002 is 2008351942.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2483925921 + 7612081 = 49839^2 + 2759^2 .

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 as a sum of consecutive naturals, namely, 622884499 + ... + 622884502.

Almost surely, 2^2491538002 is an apocalyptic number.

2491538002 is a deficient number, since it is larger than the sum of its proper divisors (1245769004).

2491538002 is a wasteful number, since it uses less digits than its factorization.

2491538002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245769003.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2491538002 is about 49915.3082931479. The cubic root of 2491538002 is about 1355.6757842385.

Adding to 2491538002 its reverse (2008351942), we get a palindrome (4499889944).

The spelling of 2491538002 in words is "two billion, four hundred ninety-one million, five hundred thirty-eight thousand, two".