1618472484864 has 135 divisors (see below), whose sum is σ = 4676856158793. Its totient is φ = 539327987712.

The previous prime is 1618472484857. The next prime is 1618472484929. The reversal of 1618472484864 is 4684842748161.

It is a happy number.

The square root of 1618472484864 is 1272192.

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

1618472484864 is a `hidden beast` number, since 1 + 6 + 1 + 8 + 4 + 72 + 484 + 86 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1495826841600 + 122645643264 = 1223040^2 + 350208^2 .

It is a super-3 number, since 3×1618472484864³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 488520072 + ... + 488523384.

Almost surely, 2^{1618472484864} is an apocalyptic number.

1618472484864 is the 1272192-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1618472484864

1618472484864 is an abundant number, since it is smaller than the sum of its proper divisors (3058383673929).

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

1618472484864 is an frugal number, since it uses more digits than its factorization.

1618472484864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660 (or 3318 counting only the distinct ones).

The product of its digits is 66060288, while the sum is 63.

The spelling of 1618472484864 in words is "one trillion, six hundred eighteen billion, four hundred seventy-two million, four hundred eighty-four thousand, eight hundred sixty-four".