18429091 has 2 divisors, whose sum is σ = 18429092. Its totient is φ = 18429090.

The previous prime is 18429083. The next prime is 18429101. The reversal of 18429091 is 19092481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18429091 - 2³ = 18429083 is a prime.

It is not a weakly prime, because it can be changed into another prime (18429011) 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 as a sum of consecutive naturals, namely, 9214545 + 9214546.

It is an arithmetic number, because the mean of its divisors is an integer number (9214546).

Almost surely, 2^18429091 is an apocalyptic number.

18429091 is a deficient number, since it is larger than the sum of its proper divisors (1).

18429091 is an equidigital number, since it uses as much as digits as its factorization.

18429091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 18429091 is about 4292.9117158404. The cubic root of 18429091 is about 264.1402826145.

The spelling of 18429091 in words is "eighteen million, four hundred twenty-nine thousand, ninety-one".