18458751041 has 4 divisors (see below), whose sum is σ = 18478368084. Its totient is φ = 18439134000.

The previous prime is 18458751037. The next prime is 18458751043. The reversal of 18458751041 is 14015785481.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4111502641 + 14347248400 = 64121^2 + 119780^2 .

It is a cyclic number.

It is not a de Polignac number, because 18458751041 - 2² = 18458751037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18458750983 and 18458751001.

It is not an unprimeable number, because it can be changed into a prime (18458751043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9807110 + ... + 9808991.

It is an arithmetic number, because the mean of its divisors is an integer number (4619592021).

Almost surely, 2^18458751041 is an apocalyptic number.

It is an amenable number.

18458751041 is a deficient number, since it is larger than the sum of its proper divisors (19617043).

18458751041 is an equidigital number, since it uses as much as digits as its factorization.

18458751041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19617042.

The product of its (nonzero) digits is 179200, while the sum is 44.

The spelling of 18458751041 in words is "eighteen billion, four hundred fifty-eight million, seven hundred fifty-one thousand, forty-one".