18241057 has 4 divisors (see below), whose sum is σ = 18254016. Its totient is φ = 18228100.

The previous prime is 18241043. The next prime is 18241081. The reversal of 18241057 is 75014281.

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 a de Polignac number, because none of the positive numbers 2^k-18241057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18242057) 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, 4069 + ... + 7282.

It is an arithmetic number, because the mean of its divisors is an integer number (4563504).

Almost surely, 2^18241057 is an apocalyptic number.

It is an amenable number.

18241057 is a deficient number, since it is larger than the sum of its proper divisors (12959).

18241057 is a wasteful number, since it uses less digits than its factorization.

18241057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12958.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 18241057 is about 4270.9550454202. The cubic root of 18241057 is about 263.2388592720.

The spelling of 18241057 in words is "eighteen million, two hundred forty-one thousand, fifty-seven".