18750136241 has 4 divisors (see below), whose sum is σ = 18893267184. Its totient is φ = 18607005300.

The previous prime is 18750136201. The next prime is 18750136259. The reversal of 18750136241 is 14263105781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14263105781 = 93131 ⋅153151.

It is a cyclic number.

It is not a de Polignac number, because 18750136241 - 2⁶ = 18750136177 is a prime.

It is a super-2 number, since 2×18750136241² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18750136195 and 18750136204.

It is not an unprimeable number, because it can be changed into a prime (18750136201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71565275 + ... + 71565536.

It is an arithmetic number, because the mean of its divisors is an integer number (4723316796).

Almost surely, 2^18750136241 is an apocalyptic number.

It is an amenable number.

18750136241 is a deficient number, since it is larger than the sum of its proper divisors (143130943).

18750136241 is a wasteful number, since it uses less digits than its factorization.

18750136241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143130942.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 18750136241 in words is "eighteen billion, seven hundred fifty million, one hundred thirty-six thousand, two hundred forty-one".