16138253 has 8 divisors (see below), whose sum is σ = 17550072. Its totient is φ = 14777856.

The previous prime is 16138247. The next prime is 16138261. The reversal of 16138253 is 35283161.

It can be written as a sum of positive squares in 4 ways, for example, as 6165289 + 9972964 = 2483^2 + 3158^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16138253 - 2¹⁰ = 16137229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16138273) 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, 12200 + ... + 13457.

It is an arithmetic number, because the mean of its divisors is an integer number (2193759).

Almost surely, 2^16138253 is an apocalyptic number.

It is an amenable number.

16138253 is a deficient number, since it is larger than the sum of its proper divisors (1411819).

16138253 is a wasteful number, since it uses less digits than its factorization.

16138253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25711.

The product of its digits is 4320, while the sum is 29.

The square root of 16138253 is about 4017.2444536025. The cubic root of 16138253 is about 252.7079122762.

The spelling of 16138253 in words is "sixteen million, one hundred thirty-eight thousand, two hundred fifty-three".