18920059 has 4 divisors (see below), whose sum is σ = 18970360. Its totient is φ = 18869760.

The previous prime is 18920051. The next prime is 18920071. The reversal of 18920059 is 95002981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18920059 - 2³ = 18920051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18920051) 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, 24582 + ... + 25339.

It is an arithmetic number, because the mean of its divisors is an integer number (4742590).

Almost surely, 2^18920059 is an apocalyptic number.

18920059 is a deficient number, since it is larger than the sum of its proper divisors (50301).

18920059 is an equidigital number, since it uses as much as digits as its factorization.

18920059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50300.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 18920059 is about 4349.7194162382. The cubic root of 18920059 is about 266.4654024762.

The spelling of 18920059 in words is "eighteen million, nine hundred twenty thousand, fifty-nine".