18974741 has 2 divisors, whose sum is σ = 18974742. Its totient is φ = 18974740.

The previous prime is 18974731. The next prime is 18974743. The reversal of 18974741 is 14747981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18887716 + 87025 = 4346^2 + 295^2 .

It is an emirp because it is prime and its reverse (14747981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18974741 is a prime.

Together with 18974743, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18974743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9487370 + 9487371.

It is an arithmetic number, because the mean of its divisors is an integer number (9487371).

Almost surely, 2^18974741 is an apocalyptic number.

It is an amenable number.

18974741 is a deficient number, since it is larger than the sum of its proper divisors (1).

18974741 is an equidigital number, since it uses as much as digits as its factorization.

18974741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 41.

The square root of 18974741 is about 4356.0005739210. Note that the first 3 decimals coincide. The cubic root of 18974741 is about 266.7218647889.

The spelling of 18974741 in words is "eighteen million, nine hundred seventy-four thousand, seven hundred forty-one".