1967998367 has 2 divisors, whose sum is σ = 1967998368. Its totient is φ = 1967998366.

The previous prime is 1967998343. The next prime is 1967998399. The reversal of 1967998367 is 7638997691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1967998367 - 2⁸ = 1967998111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1967998567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983999183 + 983999184.

It is an arithmetic number, because the mean of its divisors is an integer number (983999184).

Almost surely, 2^1967998367 is an apocalyptic number.

1967998367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1967998367 is an equidigital number, since it uses as much as digits as its factorization.

1967998367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 65.

The square root of 1967998367 is about 44362.1276203024. The cubic root of 1967998367 is about 1253.1649645959.

The spelling of 1967998367 in words is "one billion, nine hundred sixty-seven million, nine hundred ninety-eight thousand, three hundred sixty-seven".