18894650 has 24 divisors (see below), whose sum is σ = 37213020. Its totient is φ = 7112960.

The previous prime is 18894649. The next prime is 18894671. The reversal of 18894650 is 5649881.

It can be written as a sum of positive squares in 6 ways, for example, as 7327849 + 11566801 = 2707^2 + 3401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18894598 and 18894607.

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 in 11 ways as a sum of consecutive naturals, for example, 10265 + ... + 11964.

Almost surely, 2^18894650 is an apocalyptic number.

18894650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18894650 is a deficient number, since it is larger than the sum of its proper divisors (18318370).

18894650 is a wasteful number, since it uses less digits than its factorization.

18894650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22258 (or 22253 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 18894650 is about 4346.7976718499. The cubic root of 18894650 is about 266.3460643604.

The spelling of 18894650 in words is "eighteen million, eight hundred ninety-four thousand, six hundred fifty".