1967632489 has 2 divisors, whose sum is σ = 1967632490. Its totient is φ = 1967632488.

The previous prime is 1967632481. The next prime is 1967632507. The reversal of 1967632489 is 9842367691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1866931264 + 100701225 = 43208^2 + 10035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1967632489 - 2³ = 1967632481 is a prime.

It is a super-2 number, since 2×1967632489² = 7743155223536670242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1967632481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983816244 + 983816245.

It is an arithmetic number, because the mean of its divisors is an integer number (983816245).

Almost surely, 2^1967632489 is an apocalyptic number.

It is an amenable number.

1967632489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1967632489 is an equidigital number, since it uses as much as digits as its factorization.

1967632489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 55.

The square root of 1967632489 is about 44358.0036633751. The cubic root of 1967632489 is about 1253.0872995741.

The spelling of 1967632489 in words is "one billion, nine hundred sixty-seven million, six hundred thirty-two thousand, four hundred eighty-nine".