18995454976 has 99 divisors (see below), whose sum is σ = 39163251081. Its totient is φ = 9208848384.

The previous prime is 18995454943. The next prime is 18995455009. The reversal of 18995454976 is 67945459981.

The square root of 18995454976 is 137824.

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

It is an interprime number because it is at equal distance from previous prime (18995454943) and next prime (18995455009).

It can be written as a sum of positive squares in only one way, i.e., 10782745600 + 8212709376 = 103840^2 + 90624^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 260211676 + ... + 260211748.

Almost surely, 2^18995454976 is an apocalyptic number.

18995454976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

18995454976 is the 137824-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18995454976

18995454976 is an abundant number, since it is smaller than the sum of its proper divisors (20167796105).

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

18995454976 is an frugal number, since it uses more digits than its factorization.

18995454976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 134 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 67.

The spelling of 18995454976 in words is "eighteen billion, nine hundred ninety-five million, four hundred fifty-four thousand, nine hundred seventy-six".