18152047 has 2 divisors, whose sum is σ = 18152048. Its totient is φ = 18152046.

The previous prime is 18152041. The next prime is 18152051. The reversal of 18152047 is 74025181.

It is a strong prime.

It is an emirp because it is prime and its reverse (74025181) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18152047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18152041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9076023 + 9076024.

It is an arithmetic number, because the mean of its divisors is an integer number (9076024).

Almost surely, 2^18152047 is an apocalyptic number.

18152047 is a deficient number, since it is larger than the sum of its proper divisors (1).

18152047 is an equidigital number, since it uses as much as digits as its factorization.

18152047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 18152047 is about 4260.5219163854. The cubic root of 18152047 is about 262.8099896430.

The spelling of 18152047 in words is "eighteen million, one hundred fifty-two thousand, forty-seven".