18551041 has 12 divisors (see below), whose sum is σ = 19921536. Its totient is φ = 17234360.

The previous prime is 18551009. The next prime is 18551053. The reversal of 18551041 is 14015581.

It is a happy number.

It is not a de Polignac number, because 18551041 - 2⁵ = 18551009 is a prime.

It is a super-2 number, since 2×18551041² = 688282244367362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18550997 and 18551015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18551341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141546 + ... + 141676.

It is an arithmetic number, because the mean of its divisors is an integer number (1660128).

Almost surely, 2^18551041 is an apocalyptic number.

It is an amenable number.

18551041 is a deficient number, since it is larger than the sum of its proper divisors (1370495).

18551041 is an equidigital number, since it uses as much as digits as its factorization.

18551041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 18551041 is about 4307.0919423667. The cubic root of 18551041 is about 264.7216300803.

The spelling of 18551041 in words is "eighteen million, five hundred fifty-one thousand, forty-one".