238018985 has 16 divisors (see below), whose sum is σ = 302356800. Its totient is φ = 179372736.

The previous prime is 238018969. The next prime is 238018993. The reversal of 238018985 is 589810832.

It is a cyclic number.

It is not a de Polignac number, because 238018985 - 2⁴ = 238018969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10007 + ... + 24003.

It is an arithmetic number, because the mean of its divisors is an integer number (18897300).

Almost surely, 2^238018985 is an apocalyptic number.

It is an amenable number.

238018985 is a deficient number, since it is larger than the sum of its proper divisors (64337815).

238018985 is a wasteful number, since it uses less digits than its factorization.

238018985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14200.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 238018985 is about 15427.8639156560. The cubic root of 238018985 is about 619.7319210440.

The spelling of 238018985 in words is "two hundred thirty-eight million, eighteen thousand, nine hundred eighty-five".