18960247 has 2 divisors, whose sum is σ = 18960248. Its totient is φ = 18960246.

The previous prime is 18960241. The next prime is 18960259. The reversal of 18960247 is 74206981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18960247 - 2³ = 18960239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18960241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9480123 + 9480124.

It is an arithmetic number, because the mean of its divisors is an integer number (9480124).

Almost surely, 2^18960247 is an apocalyptic number.

18960247 is a deficient number, since it is larger than the sum of its proper divisors (1).

18960247 is an equidigital number, since it uses as much as digits as its factorization.

18960247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 18960247 is about 4354.3365740374. The cubic root of 18960247 is about 266.6539349824.

The spelling of 18960247 in words is "eighteen million, nine hundred sixty thousand, two hundred forty-seven".