38412472081 has 3 divisors (see below), whose sum is σ = 38412668073. Its totient is φ = 38412276090.

The previous prime is 38412472079. The next prime is 38412472123. The reversal of 38412472081 is 18027421483.

The square root of 38412472081 is 195991.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 38412472081 - 2¹ = 38412472079 is a prime.

It is a super-2 number, since 2×38412472081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38412472481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 97996 + ... + 293986.

It is an arithmetic number, because the mean of its divisors is an integer number (12804222691).

Almost surely, 2^38412472081 is an apocalyptic number.

38412472081 is the 195991-st square number.

38412472081 is the 97996-th centered octagonal number.

It is an amenable number.

38412472081 is a deficient number, since it is larger than the sum of its proper divisors (195992).

38412472081 is an frugal number, since it uses more digits than its factorization.

38412472081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391982 (or 195991 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 38412472081 in words is "thirty-eight billion, four hundred twelve million, four hundred seventy-two thousand, eighty-one".