18974513 has 8 divisors (see below), whose sum is σ = 19547136. Its totient is φ = 18407200.

The previous prime is 18974507. The next prime is 18974519. The reversal of 18974513 is 31547981.

It is an interprime number because it is at equal distance from previous prime (18974507) and next prime (18974519).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18974513 - 2⁸ = 18974257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18974519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6620 + ... + 9042.

It is an arithmetic number, because the mean of its divisors is an integer number (2443392).

Almost surely, 2^18974513 is an apocalyptic number.

It is an amenable number.

18974513 is a deficient number, since it is larger than the sum of its proper divisors (572623).

18974513 is a wasteful number, since it uses less digits than its factorization.

18974513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655.

The product of its digits is 30240, while the sum is 38.

The square root of 18974513 is about 4355.9744030469. The cubic root of 18974513 is about 266.7207964769.

The spelling of 18974513 in words is "eighteen million, nine hundred seventy-four thousand, five hundred thirteen".