18598141 has 4 divisors (see below), whose sum is σ = 18606784. Its totient is φ = 18589500.

The previous prime is 18598121. The next prime is 18598163. The reversal of 18598141 is 14189581.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18598141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18598141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18598121) 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, 1756 + ... + 6346.

It is an arithmetic number, because the mean of its divisors is an integer number (4651696).

Almost surely, 2^18598141 is an apocalyptic number.

18598141 is the 2728-th centered pentagonal number.

It is an amenable number.

18598141 is a deficient number, since it is larger than the sum of its proper divisors (8643).

18598141 is an equidigital number, since it uses as much as digits as its factorization.

18598141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8642.

The product of its digits is 11520, while the sum is 37.

The square root of 18598141 is about 4312.5562025323. The cubic root of 18598141 is about 264.9454782814.

It can be divided in two parts, 1859 and 8141, that added together give a 4-th power (10000 = 10⁴).

The spelling of 18598141 in words is "eighteen million, five hundred ninety-eight thousand, one hundred forty-one".