38419528081 has 27 divisors (see below), whose sum is σ = 42891627387. Its totient is φ = 34387818960.

The previous prime is 38419528079. The next prime is 38419528093. The reversal of 38419528081 is 18082591483.

It is a happy number.

The square root of 38419528081 is 196009.

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

It can be written as a sum of positive squares in only one way, i.e., 34948433025 + 3471095056 = 186945^2 + 58916^2 .

It is not a de Polignac number, because 38419528081 - 2¹ = 38419528079 is a prime.

It is a super-2 number, since 2×38419528081² (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 (38419528031) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 222078111 + ... + 222078283.

Almost surely, 2^38419528081 is an apocalyptic number.

38419528081 is the 196009-th square number.

38419528081 is the 98005-th centered octagonal number.

It is an amenable number.

38419528081 is a deficient number, since it is larger than the sum of its proper divisors (4472099306).

38419528081 is an equidigital number, since it uses as much as digits as its factorization.

38419528081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 49.

Multiplying 38419528081 by its sum of digits (49), we get a square (1882556875969 = 1372063²).

The spelling of 38419528081 in words is "thirty-eight billion, four hundred nineteen million, five hundred twenty-eight thousand, eighty-one".