16538357 has 16 divisors (see below), whose sum is σ = 19008000. Its totient is φ = 14242800.

The previous prime is 16538351. The next prime is 16538377. The reversal of 16538357 is 75383561.

It is not a de Polignac number, because 16538357 - 2¹⁰ = 16537333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16538357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16538351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32894 + ... + 33392.

It is an arithmetic number, because the mean of its divisors is an integer number (1188000).

Almost surely, 2^16538357 is an apocalyptic number.

It is an amenable number.

16538357 is a deficient number, since it is larger than the sum of its proper divisors (2469643).

16538357 is a wasteful number, since it uses less digits than its factorization.

16538357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664.

The product of its digits is 75600, while the sum is 38.

The square root of 16538357 is about 4066.7378818901. The cubic root of 16538357 is about 254.7792887092.

The spelling of 16538357 in words is "sixteen million, five hundred thirty-eight thousand, three hundred fifty-seven".