1684279480 has 32 divisors (see below), whose sum is σ = 4081140000. Its totient is φ = 621887616.

The previous prime is 1684279423. The next prime is 1684279481. The reversal of 1684279480 is 849724861.

It is a happy number.

It is a super-3 number, since 3×1684279480³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1684279481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1618980 + ... + 1620019.

It is an arithmetic number, because the mean of its divisors is an integer number (127535625).

Almost surely, 2^1684279480 is an apocalyptic number.

1684279480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1684279480 is an abundant number, since it is smaller than the sum of its proper divisors (2396860520).

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

1684279480 is a wasteful number, since it uses less digits than its factorization.

1684279480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239023 (or 3239019 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 1684279480 is about 41039.9741715318. The cubic root of 1684279480 is about 1189.7929352782.

The spelling of 1684279480 in words is "one billion, six hundred eighty-four million, two hundred seventy-nine thousand, four hundred eighty".