38630081 has 6 divisors (see below), whose sum is σ = 44937090. Its totient is φ = 33111456.

The previous prime is 38630071. The next prime is 38630083. The reversal of 38630081 is 18003683.

It can be written as a sum of positive squares in only one way, i.e., 38551681 + 78400 = 6209^2 + 280^2 .

It is not a de Polignac number, because 38630081 - 2¹⁰ = 38629057 is a prime.

It is a super-2 number, since 2×38630081² = 2984566316133122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38630083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 394136 + ... + 394233.

It is an arithmetic number, because the mean of its divisors is an integer number (7489515).

Almost surely, 2^38630081 is an apocalyptic number.

It is an amenable number.

38630081 is a deficient number, since it is larger than the sum of its proper divisors (6307009).

38630081 is an equidigital number, since it uses as much as digits as its factorization.

38630081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788383 (or 788376 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 38630081 is about 6215.3102094747. The cubic root of 38630081 is about 338.0455367380.

The spelling of 38630081 in words is "thirty-eight million, six hundred thirty thousand, eighty-one".