1684434670 has 32 divisors (see below), whose sum is σ = 3166205760. Its totient is φ = 643991040.

The previous prime is 1684434599. The next prime is 1684434673. The reversal of 1684434670 is 764344861.

1684434670 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1684434673) 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, 495336 + ... + 498724.

It is an arithmetic number, because the mean of its divisors is an integer number (98943930).

Almost surely, 2^1684434670 is an apocalyptic number.

1684434670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1684434670 is a deficient number, since it is larger than the sum of its proper divisors (1481771090).

1684434670 is a wasteful number, since it uses less digits than its factorization.

1684434670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580.

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 1684434670 is about 41041.8648455452. The cubic root of 1684434670 is about 1189.8294767780.

The spelling of 1684434670 in words is "one billion, six hundred eighty-four million, four hundred thirty-four thousand, six hundred seventy".