18978483067 has 2 divisors, whose sum is σ = 18978483068. Its totient is φ = 18978483066.

The previous prime is 18978483049. The next prime is 18978483101. The reversal of 18978483067 is 76038487981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18978483067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18978482996 and 18978483014.

It is not a weakly prime, because it can be changed into another prime (18978483367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9489241533 + 9489241534.

It is an arithmetic number, because the mean of its divisors is an integer number (9489241534).

Almost surely, 2^18978483067 is an apocalyptic number.

18978483067 is a deficient number, since it is larger than the sum of its proper divisors (1).

18978483067 is an equidigital number, since it uses as much as digits as its factorization.

18978483067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 18978483067 in words is "eighteen billion, nine hundred seventy-eight million, four hundred eighty-three thousand, sixty-seven".