18934091 has 16 divisors (see below), whose sum is σ = 21523968. Its totient is φ = 16504800.

The previous prime is 18934081. The next prime is 18934117. The reversal of 18934091 is 19043981.

It is a cyclic number.

It is not a de Polignac number, because 18934091 - 2¹⁰ = 18933067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18934001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27056 + ... + 27746.

It is an arithmetic number, because the mean of its divisors is an integer number (1345248).

Almost surely, 2^18934091 is an apocalyptic number.

18934091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18934091 is a deficient number, since it is larger than the sum of its proper divisors (2589877).

18934091 is a wasteful number, since it uses less digits than its factorization.

18934091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 18934091 is about 4351.3320948877. The cubic root of 18934091 is about 266.5312605964.

The spelling of 18934091 in words is "eighteen million, nine hundred thirty-four thousand, ninety-one".