94438821481 has 9 divisors (see below), whose sum is σ = 100326374149. Its totient is φ = 88878679744.

The previous prime is 94438821473. The next prime is 94438821493. The reversal of 94438821481 is 18412883449.

The square root of 94438821481 is 307309.

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

It can be written as a sum of positive squares in 4 ways, for example, as 59507211481 + 34931610000 = 243941^2 + 186900^2 .

It is not a de Polignac number, because 94438821481 - 2³ = 94438821473 is a prime.

It is a super-2 number, since 2×94438821481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94438822481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5215215 + ... + 5233291.

Almost surely, 2^94438821481 is an apocalyptic number.

94438821481 is the 307309-th square number.

94438821481 is the 153655-th centered octagonal number.

It is an amenable number.

94438821481 is a deficient number, since it is larger than the sum of its proper divisors (5887552668).

94438821481 is an frugal number, since it uses more digits than its factorization.

94438821481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36188 (or 18094 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 52.

The spelling of 94438821481 in words is "ninety-four billion, four hundred thirty-eight million, eight hundred twenty-one thousand, four hundred eighty-one".