2493748538 has 4 divisors (see below), whose sum is σ = 3740622810. Its totient is φ = 1246874268.

The previous prime is 2493748519. The next prime is 2493748559. The reversal of 2493748538 is 8358473942.

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., 2440063609 + 53684929 = 49397^2 + 7327^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2493748538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623437133 + ... + 623437136.

Almost surely, 2^2493748538 is an apocalyptic number.

2493748538 is a deficient number, since it is larger than the sum of its proper divisors (1246874272).

2493748538 is a wasteful number, since it uses less digits than its factorization.

2493748538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246874271.

The product of its digits is 5806080, while the sum is 53.

The square root of 2493748538 is about 49937.4462502840. The cubic root of 2493748538 is about 1356.0765921327.

The spelling of 2493748538 in words is "two billion, four hundred ninety-three million, seven hundred forty-eight thousand, five hundred thirty-eight".