18834091 has 4 divisors (see below), whose sum is σ = 19045800. Its totient is φ = 18622384.

The previous prime is 18834059. The next prime is 18834097. The reversal of 18834091 is 19043881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19043881 = 673 ⋅28297.

It is a cyclic number.

It is not a de Polignac number, because 18834091 - 2⁵ = 18834059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18834097) 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, 105721 + ... + 105898.

It is an arithmetic number, because the mean of its divisors is an integer number (4761450).

Almost surely, 2^18834091 is an apocalyptic number.

18834091 is a deficient number, since it is larger than the sum of its proper divisors (211709).

18834091 is an equidigital number, since it uses as much as digits as its factorization.

18834091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211708.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 18834091 is about 4339.8261485917. The cubic root of 18834091 is about 266.0612056945.

The spelling of 18834091 in words is "eighteen million, eight hundred thirty-four thousand, ninety-one".