218992052 has 6 divisors (see below), whose sum is σ = 383236098. Its totient is φ = 109496024.

The previous prime is 218992049. The next prime is 218992061. The reversal of 218992052 is 250299812.

218992052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 217444516 + 1547536 = 14746^2 + 1244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 218991997 and 218992015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27374003 + ... + 27374010.

It is an arithmetic number, because the mean of its divisors is an integer number (63872683).

Almost surely, 2^218992052 is an apocalyptic number.

It is an amenable number.

218992052 is a deficient number, since it is larger than the sum of its proper divisors (164244046).

218992052 is a wasteful number, since it uses less digits than its factorization.

218992052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54748017 (or 54748015 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 218992052 is about 14798.3800464781. The cubic root of 218992052 is about 602.7577240297.

The spelling of 218992052 in words is "two hundred eighteen million, nine hundred ninety-two thousand, fifty-two".