18830091 has 16 divisors (see below), whose sum is σ = 28804608. Its totient is φ = 10718400.

The previous prime is 18830089. The next prime is 18830099. The reversal of 18830091 is 19003881.

It is not a de Polignac number, because 18830091 - 2¹ = 18830089 is a prime.

It is a super-3 number, since 3×18830091³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18830099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4306 + ... + 7496.

It is an arithmetic number, because the mean of its divisors is an integer number (1800288).

Almost surely, 2^18830091 is an apocalyptic number.

18830091 is a deficient number, since it is larger than the sum of its proper divisors (9974517).

18830091 is a wasteful number, since it uses less digits than its factorization.

18830091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 18830091 is about 4339.3652761666. The cubic root of 18830091 is about 266.0423689271.

The spelling of 18830091 in words is "eighteen million, eight hundred thirty thousand, ninety-one".