1684032481 has 4 divisors (see below), whose sum is σ = 1684115712. Its totient is φ = 1683949252.

The previous prime is 1684032463. The next prime is 1684032487. The reversal of 1684032481 is 1842304861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1842304861 = 3467 ⋅531383.

It is a cyclic number.

It is not a de Polignac number, because 1684032481 - 2¹⁷ = 1683901409 is a prime.

It is a super-2 number, since 2×1684032481² = 5671930794126030722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1684032481.

It is not an unprimeable number, because it can be changed into a prime (1684032487) 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 3 ways as a sum of consecutive naturals, for example, 10440 + ... + 58966.

It is an arithmetic number, because the mean of its divisors is an integer number (421028928).

Almost surely, 2^1684032481 is an apocalyptic number.

It is an amenable number.

1684032481 is a deficient number, since it is larger than the sum of its proper divisors (83231).

1684032481 is an equidigital number, since it uses as much as digits as its factorization.

1684032481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83230.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 1684032481 is about 41036.9648122275. The cubic root of 1684032481 is about 1189.7347715281.

The spelling of 1684032481 in words is "one billion, six hundred eighty-four million, thirty-two thousand, four hundred eighty-one".