18448951 has 2 divisors, whose sum is σ = 18448952. Its totient is φ = 18448950.

The previous prime is 18448939. The next prime is 18448973. The reversal of 18448951 is 15984481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18448951 - 2¹⁵ = 18416183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18448931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9224475 + 9224476.

It is an arithmetic number, because the mean of its divisors is an integer number (9224476).

Almost surely, 2^18448951 is an apocalyptic number.

18448951 is a deficient number, since it is larger than the sum of its proper divisors (1).

18448951 is an equidigital number, since it uses as much as digits as its factorization.

18448951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 40.

The square root of 18448951 is about 4295.2242083505. The cubic root of 18448951 is about 264.2351316182.

The spelling of 18448951 in words is "eighteen million, four hundred forty-eight thousand, nine hundred fifty-one".