2493505538 has 4 divisors (see below), whose sum is σ = 3740258310. Its totient is φ = 1246752768.

The previous prime is 2493505529. The next prime is 2493505559. The reversal of 2493505538 is 8355053942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8355053942 = 2 ⋅4177526971.

It can be written as a sum of positive squares in only one way, i.e., 1656734209 + 836771329 = 40703^2 + 28927^2 .

It is a super-3 number, since 3×2493505538³ (a number of 29 digits) contains 333 as substring.

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, 623376383 + ... + 623376386.

Almost surely, 2^2493505538 is an apocalyptic number.

2493505538 is a deficient number, since it is larger than the sum of its proper divisors (1246752772).

2493505538 is a wasteful number, since it uses less digits than its factorization.

2493505538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246752771.

The product of its (nonzero) digits is 648000, while the sum is 44.

The square root of 2493505538 is about 49935.0131470895. The cubic root of 2493505538 is about 1356.0325436770.

The spelling of 2493505538 in words is "two billion, four hundred ninety-three million, five hundred five thousand, five hundred thirty-eight".