11993744530 has 8 divisors (see below), whose sum is σ = 21588740172. Its totient is φ = 4797497808.

The previous prime is 11993744479. The next prime is 11993744537. The reversal of 11993744530 is 3544739911.

It can be written as a sum of positive squares in 2 ways, for example, as 11948894721 + 44849809 = 109311^2 + 6697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (11993744537) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 599687217 + ... + 599687236.

Almost surely, 2^11993744530 is an apocalyptic number.

11993744530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11993744530 is a deficient number, since it is larger than the sum of its proper divisors (9594995642).

11993744530 is a wasteful number, since it uses less digits than its factorization.

11993744530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199374460.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 11993744530 in words is "eleven billion, nine hundred ninety-three million, seven hundred forty-four thousand, five hundred thirty".