1684283940 has 72 divisors (see below), whose sum is σ = 5273818368. Its totient is φ = 434652480.

The previous prime is 1684283929. The next prime is 1684283941. The reversal of 1684283940 is 493824861.

It is a happy number.

It is a super-3 number, since 3×1684283940³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1684283941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145342 + ... + 156501.

Almost surely, 2^1684283940 is an apocalyptic number.

1684283940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1684283940 is an abundant number, since it is smaller than the sum of its proper divisors (3589534428).

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

1684283940 is a wasteful number, since it uses less digits than its factorization.

1684283940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301889 (or 301884 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 1684283940 is about 41040.0285087620. The cubic root of 1684283940 is about 1189.7939854744.

The spelling of 1684283940 in words is "one billion, six hundred eighty-four million, two hundred eighty-three thousand, nine hundred forty".