1982465 has 8 divisors (see below), whose sum is σ = 2424168. Its totient is φ = 1555840.

The previous prime is 1982447. The next prime is 1982467. The reversal of 1982465 is 5642891.

It is a Cunningham number, because it is equal to 1408²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 712336 + 1270129 = 844^2 + 1127^2 .

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

It is not a de Polignac number, because 1982465 - 2⁶ = 1982401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3476 + ... + 4005.

It is an arithmetic number, because the mean of its divisors is an integer number (303021).

It is a Proth number, since it is equal to 121 ⋅ 2¹⁴ + 1 and 121 < 2¹⁴.

2^1982465 is an apocalyptic number.

It is an amenable number.

1982465 is a deficient number, since it is larger than the sum of its proper divisors (441703).

1982465 is an equidigital number, since it uses as much as digits as its factorization.

1982465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7539.

The product of its digits is 17280, while the sum is 35.

The square root of 1982465 is about 1408.0003551136. Note that the first 3 decimals coincide. The cubic root of 1982465 is about 125.6228116910.

The spelling of 1982465 in words is "one million, nine hundred eighty-two thousand, four hundred sixty-five".