1982567 has 2 divisors, whose sum is σ = 1982568. Its totient is φ = 1982566.

The previous prime is 1982551. The next prime is 1982573. The reversal of 1982567 is 7652891.

It is a strong prime.

It is an emirp because it is prime and its reverse (7652891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1982567 - 2⁴ = 1982551 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1982567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991283 + 991284.

It is an arithmetic number, because the mean of its divisors is an integer number (991284).

2^1982567 is an apocalyptic number.

1982567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982567 is an equidigital number, since it uses as much as digits as its factorization.

1982567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 1982567 is about 1408.0365762295. The cubic root of 1982567 is about 125.6249661312.

The spelling of 1982567 in words is "one million, nine hundred eighty-two thousand, five hundred sixty-seven".