18946654 has 4 divisors (see below), whose sum is σ = 28419984. Its totient is φ = 9473326.

The previous prime is 18946643. The next prime is 18946663. The reversal of 18946654 is 45664981.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18946654.

It is a congruent number.

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, 4736662 + ... + 4736665.

It is an arithmetic number, because the mean of its divisors is an integer number (7104996).

Almost surely, 2^18946654 is an apocalyptic number.

18946654 is a deficient number, since it is larger than the sum of its proper divisors (9473330).

18946654 is an equidigital number, since it uses as much as digits as its factorization.

18946654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9473329.

The product of its digits is 207360, while the sum is 43.

The square root of 18946654 is about 4352.7754364313. The cubic root of 18946654 is about 266.5901964760.

It can be divided in two parts, 18946 and 654, that added together give a square (19600 = 140²).

The spelling of 18946654 in words is "eighteen million, nine hundred forty-six thousand, six hundred fifty-four".