18434913 has 8 divisors (see below), whose sum is σ = 28091328. Its totient is φ = 10534224.

The previous prime is 18434879. The next prime is 18434957. The reversal of 18434913 is 31943481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18434913 - 2¹⁰ = 18433889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18434113) 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 7 ways as a sum of consecutive naturals, for example, 438906 + ... + 438947.

It is an arithmetic number, because the mean of its divisors is an integer number (3511416).

Almost surely, 2^18434913 is an apocalyptic number.

It is an amenable number.

18434913 is a deficient number, since it is larger than the sum of its proper divisors (9656415).

18434913 is an equidigital number, since it uses as much as digits as its factorization.

18434913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877863.

The product of its digits is 10368, while the sum is 33.

The square root of 18434913 is about 4293.5897568352. The cubic root of 18434913 is about 264.1680948529.

The spelling of 18434913 in words is "eighteen million, four hundred thirty-four thousand, nine hundred thirteen".