18950479 has 2 divisors, whose sum is σ = 18950480. Its totient is φ = 18950478.

The previous prime is 18950471. The next prime is 18950489. The reversal of 18950479 is 97405981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18950479 - 2³ = 18950471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18950471) 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, 9475239 + 9475240.

It is an arithmetic number, because the mean of its divisors is an integer number (9475240).

Almost surely, 2^18950479 is an apocalyptic number.

18950479 is a deficient number, since it is larger than the sum of its proper divisors (1).

18950479 is an equidigital number, since it uses as much as digits as its factorization.

18950479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 18950479 is about 4353.2147890955. The cubic root of 18950479 is about 266.6081352440.

The spelling of 18950479 in words is "eighteen million, nine hundred fifty thousand, four hundred seventy-nine".