1684853690 has 64 divisors (see below), whose sum is σ = 3489575040. Its totient is φ = 580504320.

The previous prime is 1684853587. The next prime is 1684853693. The reversal of 1684853690 is 963584861.

It is a super-2 number, since 2×1684853690² = 5677463913413232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1684853693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160400 + ... + 170580.

It is an arithmetic number, because the mean of its divisors is an integer number (54524610).

Almost surely, 2^1684853690 is an apocalyptic number.

1684853690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1684853690 is an abundant number, since it is smaller than the sum of its proper divisors (1804721350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1684853690 is a wasteful number, since it uses less digits than its factorization.

1684853690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10287.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 1684853690 is about 41046.9693156511. The cubic root of 1684853690 is about 1189.9281292658.

The spelling of 1684853690 in words is "one billion, six hundred eighty-four million, eight hundred fifty-three thousand, six hundred ninety".