18119215307 has 2 divisors, whose sum is σ = 18119215308. Its totient is φ = 18119215306.

The previous prime is 18119215291. The next prime is 18119215339. The reversal of 18119215307 is 70351291181.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (70351291181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18119215307 - 2⁴ = 18119215291 is a prime.

It is not a weakly prime, because it can be changed into another prime (18119215357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9059607653 + 9059607654.

It is an arithmetic number, because the mean of its divisors is an integer number (9059607654).

Almost surely, 2^18119215307 is an apocalyptic number.

18119215307 is a deficient number, since it is larger than the sum of its proper divisors (1).

18119215307 is an equidigital number, since it uses as much as digits as its factorization.

18119215307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 38.

The spelling of 18119215307 in words is "eighteen billion, one hundred nineteen million, two hundred fifteen thousand, three hundred seven".