18960877349 has 2 divisors, whose sum is σ = 18960877350. Its totient is φ = 18960877348.

The previous prime is 18960877321. The next prime is 18960877357. The reversal of 18960877349 is 94377806981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18959913025 + 964324 = 137695^2 + 982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18960877349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18960877291 and 18960877300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18960877399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9480438674 + 9480438675.

It is an arithmetic number, because the mean of its divisors is an integer number (9480438675).

Almost surely, 2^18960877349 is an apocalyptic number.

It is an amenable number.

18960877349 is a deficient number, since it is larger than the sum of its proper divisors (1).

18960877349 is an equidigital number, since it uses as much as digits as its factorization.

18960877349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 18960877349 in words is "eighteen billion, nine hundred sixty million, eight hundred seventy-seven thousand, three hundred forty-nine".