1983465 has 24 divisors (see below), whose sum is σ = 3751488. Its totient is φ = 961440.

The previous prime is 1983463. The next prime is 1983479. The reversal of 1983465 is 5643891.

1983465 is a `hidden beast` number, since 198 + 3 + 465 = 666.

It is not a de Polignac number, because 1983465 - 2¹ = 1983463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1983463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1509 + ... + 2498.

It is an arithmetic number, because the mean of its divisors is an integer number (156312).

2^1983465 is an apocalyptic number.

1983465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1983465 is a deficient number, since it is larger than the sum of its proper divisors (1768023).

1983465 is a wasteful number, since it uses less digits than its factorization.

1983465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029 (or 4026 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1983465 is about 1408.3554238899. The cubic root of 1983465 is about 125.6439304657.

It can be divided in two parts, 198 and 3465, that added together give a palindrome (3663).

The spelling of 1983465 in words is "one million, nine hundred eighty-three thousand, four hundred sixty-five".