18249345541 has 8 divisors (see below), whose sum is σ = 20858247360. Its totient is φ = 15640906848.

The previous prime is 18249345523. The next prime is 18249345557. The reversal of 18249345541 is 14554394281.

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

It is not a de Polignac number, because 18249345541 - 2¹¹ = 18249343493 is a prime.

It is a super-2 number, since 2×18249345541² (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 = 18249345491 and 18249345500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18249340541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26776 + ... + 192913.

It is an arithmetic number, because the mean of its divisors is an integer number (2607280920).

Almost surely, 2^18249345541 is an apocalyptic number.

It is an amenable number.

18249345541 is a deficient number, since it is larger than the sum of its proper divisors (2608901819).

18249345541 is a wasteful number, since it uses less digits than its factorization.

18249345541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231563.

The product of its digits is 691200, while the sum is 46.

The spelling of 18249345541 in words is "eighteen billion, two hundred forty-nine million, three hundred forty-five thousand, five hundred forty-one".