218970652 has 6 divisors (see below), whose sum is σ = 383198648. Its totient is φ = 109485324.

The previous prime is 218970641. The next prime is 218970667. The reversal of 218970652 is 256079812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27371328 + ... + 27371335.

Almost surely, 2^218970652 is an apocalyptic number.

It is an amenable number.

218970652 is a deficient number, since it is larger than the sum of its proper divisors (164227996).

218970652 is a wasteful number, since it uses less digits than its factorization.

218970652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54742667 (or 54742665 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 218970652 is about 14797.6569766974. The cubic root of 218970652 is about 602.7380894732.

The spelling of 218970652 in words is "two hundred eighteen million, nine hundred seventy thousand, six hundred fifty-two".