238166655 has 16 divisors (see below), whose sum is σ = 381270240. Its totient is φ = 126954368.

The previous prime is 238166623. The next prime is 238166659. The reversal of 238166655 is 556661832.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 238166655 - 2⁵ = 238166623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238166659) 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, 38989 + ... + 44681.

It is an arithmetic number, because the mean of its divisors is an integer number (23829390).

Almost surely, 2^238166655 is an apocalyptic number.

238166655 is a deficient number, since it is larger than the sum of its proper divisors (143103585).

238166655 is a wasteful number, since it uses less digits than its factorization.

238166655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8490.

The product of its digits is 259200, while the sum is 42.

The square root of 238166655 is about 15432.6489949069. The cubic root of 238166655 is about 619.8600577322.

The spelling of 238166655 in words is "two hundred thirty-eight million, one hundred sixty-six thousand, six hundred fifty-five".