16138473 has 8 divisors (see below), whose sum is σ = 23173248. Its totient is φ = 9931344.

The previous prime is 16138403. The next prime is 16138477. The reversal of 16138473 is 37483161.

16138473 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16138473 - 2⁸ = 16138217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16138477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206865 + ... + 206942.

It is an arithmetic number, because the mean of its divisors is an integer number (2896656).

Almost surely, 2^16138473 is an apocalyptic number.

16138473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16138473 is a deficient number, since it is larger than the sum of its proper divisors (7034775).

16138473 is a wasteful number, since it uses less digits than its factorization.

16138473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413823.

The product of its digits is 12096, while the sum is 33.

The square root of 16138473 is about 4017.2718354625. The cubic root of 16138473 is about 252.7090605931.

The spelling of 16138473 in words is "sixteen million, one hundred thirty-eight thousand, four hundred seventy-three".