18974650 has 24 divisors (see below), whose sum is σ = 35488800. Its totient is φ = 7547760.

The previous prime is 18974647. The next prime is 18974651. The reversal of 18974650 is 5647981.

It is not an unprimeable number, because it can be changed into a prime (18974651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8997 + ... + 10903.

It is an arithmetic number, because the mean of its divisors is an integer number (1478700).

Almost surely, 2^18974650 is an apocalyptic number.

18974650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18974650 is a deficient number, since it is larger than the sum of its proper divisors (16514150).

18974650 is a wasteful number, since it uses less digits than its factorization.

18974650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 18974650 is about 4355.9901285471. The cubic root of 18974650 is about 266.7214384022.

The spelling of 18974650 in words is "eighteen million, nine hundred seventy-four thousand, six hundred fifty".