18229541 has 4 divisors (see below), whose sum is σ = 19886784. Its totient is φ = 16572300.

The previous prime is 18229537. The next prime is 18229573. The reversal of 18229541 is 14592281.

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.

It is a cyclic number.

It is not a de Polignac number, because 18229541 - 2² = 18229537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18229498 and 18229507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18229511) 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, 828605 + ... + 828626.

It is an arithmetic number, because the mean of its divisors is an integer number (4971696).

Almost surely, 2^18229541 is an apocalyptic number.

18229541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18229541 is a deficient number, since it is larger than the sum of its proper divisors (1657243).

18229541 is a wasteful number, since it uses less digits than its factorization.

18229541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657242.

The product of its digits is 5760, while the sum is 32.

The square root of 18229541 is about 4269.6066563561. The cubic root of 18229541 is about 263.1834513559.

The spelling of 18229541 in words is "eighteen million, two hundred twenty-nine thousand, five hundred forty-one".