1983457 has 8 divisors (see below), whose sum is σ = 2322432. Its totient is φ = 1658400.

The previous prime is 1983439. The next prime is 1983463. The reversal of 1983457 is 7543891.

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 1983457 - 2¹¹ = 1981409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1983427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3169 + ... + 3742.

It is an arithmetic number, because the mean of its divisors is an integer number (290304).

2^1983457 is an apocalyptic number.

It is an amenable number.

1983457 is a deficient number, since it is larger than the sum of its proper divisors (338975).

1983457 is an equidigital number, since it uses as much as digits as its factorization.

1983457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959.

The product of its digits is 30240, while the sum is 37.

The square root of 1983457 is about 1408.3525836949. The cubic root of 1983457 is about 125.6437615437.

It can be divided in two parts, 19834 and 57, that added together give a palindrome (19891).

The spelling of 1983457 in words is "one million, nine hundred eighty-three thousand, four hundred fifty-seven".