1684420323 has 16 divisors (see below), whose sum is σ = 2315264640. Its totient is φ = 1088783424.

The previous prime is 1684420289. The next prime is 1684420327. The reversal of 1684420323 is 3230244861.

It is not a de Polignac number, because 1684420323 - 2¹⁷ = 1684289251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1684420327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52261 + ... + 78102.

It is an arithmetic number, because the mean of its divisors is an integer number (144704040).

Almost surely, 2^1684420323 is an apocalyptic number.

1684420323 is a deficient number, since it is larger than the sum of its proper divisors (630844317).

1684420323 is a wasteful number, since it uses less digits than its factorization.

1684420323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130498.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 1684420323 is about 41041.6900602302. The cubic root of 1684420323 is about 1189.8260986848.

The spelling of 1684420323 in words is "one billion, six hundred eighty-four million, four hundred twenty thousand, three hundred twenty-three".