16138655 has 24 divisors (see below), whose sum is σ = 21345120. Its totient is φ = 11706240.

The previous prime is 16138613. The next prime is 16138667. The reversal of 16138655 is 55683161.

16138655 = T₄₀₄ + T₄₀₅ + ... + T₅₄₅.

16138655 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 16138655 - 2⁸ = 16138399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59861 + ... + 60129.

It is an arithmetic number, because the mean of its divisors is an integer number (889380).

Almost surely, 2^16138655 is an apocalyptic number.

16138655 is a deficient number, since it is larger than the sum of its proper divisors (5206465).

16138655 is a wasteful number, since it uses less digits than its factorization.

16138655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 358 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 16138655 is about 4017.2944875874. The cubic root of 16138655 is about 252.7100105565.

The spelling of 16138655 in words is "sixteen million, one hundred thirty-eight thousand, six hundred fifty-five".