1982147 has 8 divisors (see below), whose sum is σ = 2041200. Its totient is φ = 1924000.

The previous prime is 1982129. The next prime is 1982153. The reversal of 1982147 is 7412891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1982147 - 2⁶ = 1982083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982447) 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 in 7 ways as a sum of consecutive naturals, for example, 7772 + ... + 8022.

It is an arithmetic number, because the mean of its divisors is an integer number (255150).

2^1982147 is an apocalyptic number.

1982147 is a deficient number, since it is larger than the sum of its proper divisors (59053).

1982147 is a wasteful number, since it uses less digits than its factorization.

1982147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453.

The product of its digits is 4032, while the sum is 32.

The square root of 1982147 is about 1407.8874244768. The cubic root of 1982147 is about 125.6160944324.

The spelling of 1982147 in words is "one million, nine hundred eighty-two thousand, one hundred forty-seven".