16193138 has 8 divisors (see below), whose sum is σ = 26158188. Its totient is φ = 7473744.

The previous prime is 16193123. The next prime is 16193153. The reversal of 16193138 is 83139161.

It is an interprime number because it is at equal distance from previous prime (16193123) and next prime (16193153).

It can be written as a sum of positive squares in 2 ways, for example, as 11854249 + 4338889 = 3443^2 + 2083^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311381 + ... + 311432.

Almost surely, 2^16193138 is an apocalyptic number.

16193138 is a deficient number, since it is larger than the sum of its proper divisors (9965050).

16193138 is a wasteful number, since it uses less digits than its factorization.

16193138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622828.

The product of its digits is 3888, while the sum is 32.

The square root of 16193138 is about 4024.0698304080. The cubic root of 16193138 is about 252.9940684034.

The spelling of 16193138 in words is "sixteen million, one hundred ninety-three thousand, one hundred thirty-eight".