16534418 has 4 divisors (see below), whose sum is σ = 24801630. Its totient is φ = 8267208.

The previous prime is 16534411. The next prime is 16534457. The reversal of 16534418 is 81443561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15626209 + 908209 = 3953^2 + 953^2 .

It is not an unprimeable number, because it can be changed into a prime (16534411) 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 as a sum of consecutive naturals, namely, 4133603 + ... + 4133606.

Almost surely, 2^16534418 is an apocalyptic number.

16534418 is a deficient number, since it is larger than the sum of its proper divisors (8267212).

16534418 is an equidigital number, since it uses as much as digits as its factorization.

16534418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8267211.

The product of its digits is 11520, while the sum is 32.

The square root of 16534418 is about 4066.2535582524. The cubic root of 16534418 is about 254.7590598698.

Adding to 16534418 its reverse (81443561), we get a palindrome (97977979).

The spelling of 16534418 in words is "sixteen million, five hundred thirty-four thousand, four hundred eighteen".