1684274457616 has 15 divisors (see below), whose sum is σ = 3263291819581. Its totient is φ = 842134633216.

The previous prime is 1684274457599. The next prime is 1684274457641. The reversal of 1684274457616 is 6167544724861.

The square root of 1684274457616 is 1297796.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 139126016016 + 1545148441600 = 372996^2 + 1243040^2 .

It is a super-3 number, since 3×1684274457616³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5028960 + ... + 5353408.

Almost surely, 2^{1684274457616} is an apocalyptic number.

1684274457616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1684274457616 is the 1297796-th square number.

It is an amenable number.

1684274457616 is a deficient number, since it is larger than the sum of its proper divisors (1579017361965).

1684274457616 is an frugal number, since it uses more digits than its factorization.

1684274457616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648906 (or 324451 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 61.

The spelling of 1684274457616 in words is "one trillion, six hundred eighty-four billion, two hundred seventy-four million, four hundred fifty-seven thousand, six hundred sixteen".