18683716 has 6 divisors (see below), whose sum is σ = 32696510. Its totient is φ = 9341856.

The previous prime is 18683657. The next prime is 18683723. The reversal of 18683716 is 61738681.

It can be written as a sum of positive squares in only one way, i.e., 18662400 + 21316 = 4320^2 + 146^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2335461 + ... + 2335468.

Almost surely, 2^18683716 is an apocalyptic number.

It is an amenable number.

18683716 is a deficient number, since it is larger than the sum of its proper divisors (14012794).

18683716 is a wasteful number, since it uses less digits than its factorization.

18683716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670933 (or 4670931 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 18683716 is about 4322.4664255492. The cubic root of 18683716 is about 265.3512181800.

The spelling of 18683716 in words is "eighteen million, six hundred eighty-three thousand, seven hundred sixteen".