18845479 has 2 divisors, whose sum is σ = 18845480. Its totient is φ = 18845478.

The previous prime is 18845419. The next prime is 18845501. The reversal of 18845479 is 97454881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18845479 - 2¹⁵ = 18812711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18845419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9422739 + 9422740.

It is an arithmetic number, because the mean of its divisors is an integer number (9422740).

Almost surely, 2^18845479 is an apocalyptic number.

18845479 is a deficient number, since it is larger than the sum of its proper divisors (1).

18845479 is an equidigital number, since it uses as much as digits as its factorization.

18845479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 18845479 is about 4341.1379844460. The cubic root of 18845479 is about 266.1148193702.

The spelling of 18845479 in words is "eighteen million, eight hundred forty-five thousand, four hundred seventy-nine".