1684862049 has 8 divisors (see below), whose sum is σ = 2419289152. Its totient is φ = 1036838160.

The previous prime is 1684862041. The next prime is 1684862099. The reversal of 1684862049 is 9402684861.

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

It is not a de Polignac number, because 1684862049 - 2³ = 1684862041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1684861989 and 1684862007.

It is not an unprimeable number, because it can be changed into a prime (1684862041) 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, 21600757 + ... + 21600834.

It is an arithmetic number, because the mean of its divisors is an integer number (302411144).

Almost surely, 2^1684862049 is an apocalyptic number.

It is an amenable number.

1684862049 is a deficient number, since it is larger than the sum of its proper divisors (734427103).

1684862049 is a wasteful number, since it uses less digits than its factorization.

1684862049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43201607.

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 1684862049 is about 41047.0711379022. The cubic root of 1684862049 is about 1189.9300971108.

The spelling of 1684862049 in words is "one billion, six hundred eighty-four million, eight hundred sixty-two thousand, forty-nine".