18969473654107 has 2 divisors, whose sum is σ = 18969473654108. Its totient is φ = 18969473654106.

The previous prime is 18969473654077. The next prime is 18969473654213. The reversal of 18969473654107 is 70145637496981.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18969473654107 - 2⁷ = 18969473653979 is a prime.

It is not a weakly prime, because it can be changed into another prime (18969473655107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9484736827053 + 9484736827054.

It is an arithmetic number, because the mean of its divisors is an integer number (9484736827054).

Almost surely, 2^{18969473654107} is an apocalyptic number.

18969473654107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18969473654107 is an equidigital number, since it uses as much as digits as its factorization.

18969473654107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 274337280, while the sum is 70.

The spelling of 18969473654107 in words is "eighteen trillion, nine hundred sixty-nine billion, four hundred seventy-three million, six hundred fifty-four thousand, one hundred seven".