18268115479 has 2 divisors, whose sum is σ = 18268115480. Its totient is φ = 18268115478.

The previous prime is 18268115473. The next prime is 18268115501. The reversal of 18268115479 is 97451186281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18268115479 - 2⁷ = 18268115351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18268115473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9134057739 + 9134057740.

It is an arithmetic number, because the mean of its divisors is an integer number (9134057740).

Almost surely, 2^18268115479 is an apocalyptic number.

18268115479 is a deficient number, since it is larger than the sum of its proper divisors (1).

18268115479 is an equidigital number, since it uses as much as digits as its factorization.

18268115479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 52.

The spelling of 18268115479 in words is "eighteen billion, two hundred sixty-eight million, one hundred fifteen thousand, four hundred seventy-nine".