218148908 has 6 divisors (see below), whose sum is σ = 381760596. Its totient is φ = 109074452.

The previous prime is 218148907. The next prime is 218148967. The reversal of 218148908 is 809841812.

It is not an unprimeable number, because it can be changed into a prime (218148907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27268610 + ... + 27268617.

It is an arithmetic number, because the mean of its divisors is an integer number (63626766).

Almost surely, 2^218148908 is an apocalyptic number.

It is an amenable number.

218148908 is a deficient number, since it is larger than the sum of its proper divisors (163611688).

218148908 is a wasteful number, since it uses less digits than its factorization.

218148908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54537231 (or 54537229 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 218148908 is about 14769.8648605869. The cubic root of 218148908 is about 601.9831674856.

The spelling of 218148908 in words is "two hundred eighteen million, one hundred forty-eight thousand, nine hundred eight".