16538473 has 4 divisors (see below), whose sum is σ = 18901120. Its totient is φ = 14175828.

The previous prime is 16538429. The next prime is 16538477. The reversal of 16538473 is 37483561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16538473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16538477) 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, 1181313 + ... + 1181326.

It is an arithmetic number, because the mean of its divisors is an integer number (4725280).

Almost surely, 2^16538473 is an apocalyptic number.

It is an amenable number.

16538473 is a deficient number, since it is larger than the sum of its proper divisors (2362647).

16538473 is an equidigital number, since it uses as much as digits as its factorization.

16538473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362646.

The product of its digits is 60480, while the sum is 37.

The square root of 16538473 is about 4066.7521439104. The cubic root of 16538473 is about 254.7798843816.

The spelling of 16538473 in words is "sixteen million, five hundred thirty-eight thousand, four hundred seventy-three".