18016552 has 16 divisors (see below), whose sum is σ = 33913440. Its totient is φ = 8972976.

The previous prime is 18016547. The next prime is 18016571. The reversal of 18016552 is 25561081.

It is a super-2 number, since 2×18016552² = 649192291937408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18016552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2178 + ... + 6385.

It is an arithmetic number, because the mean of its divisors is an integer number (2119590).

Almost surely, 2^18016552 is an apocalyptic number.

It is an amenable number.

18016552 is a deficient number, since it is larger than the sum of its proper divisors (15896888).

18016552 is a wasteful number, since it uses less digits than its factorization.

18016552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8832 (or 8828 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 18016552 is about 4244.5909107946. The cubic root of 18016552 is about 262.1544453876.

The spelling of 18016552 in words is "eighteen million, sixteen thousand, five hundred fifty-two".