38425851481 has 4 divisors (see below), whose sum is σ = 38470689972. Its totient is φ = 38381012992.

The previous prime is 38425851461. The next prime is 38425851517. The reversal of 38425851481 is 18415852483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18415852483 = 7 ⋅2630836069.

It can be written as a sum of positive squares in 2 ways, for example, as 23834419456 + 14591432025 = 154384^2 + 120795^2 .

It is a cyclic number.

It is not a de Polignac number, because 38425851481 - 2¹¹ = 38425849433 is a prime.

It is a super-2 number, since 2×38425851481² (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 (38425851421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22417960 + ... + 22419673.

It is an arithmetic number, because the mean of its divisors is an integer number (9617672493).

Almost surely, 2^38425851481 is an apocalyptic number.

It is an amenable number.

38425851481 is a deficient number, since it is larger than the sum of its proper divisors (44838491).

38425851481 is an equidigital number, since it uses as much as digits as its factorization.

38425851481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44838490.

The product of its digits is 1228800, while the sum is 49.

The spelling of 38425851481 in words is "thirty-eight billion, four hundred twenty-five million, eight hundred fifty-one thousand, four hundred eighty-one".