38438461 has 2 divisors, whose sum is σ = 38438462. Its totient is φ = 38438460.

The previous prime is 38438453. The next prime is 38438471. The reversal of 38438461 is 16483483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 17690436 = 4555^2 + 4206^2 .

It is an emirp because it is prime and its reverse (16483483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38438461 - 2³ = 38438453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38438461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38438471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19219230 + 19219231.

It is an arithmetic number, because the mean of its divisors is an integer number (19219231).

Almost surely, 2^38438461 is an apocalyptic number.

38438461 is the 3580-th hex number.

It is an amenable number.

38438461 is a deficient number, since it is larger than the sum of its proper divisors (1).

38438461 is an equidigital number, since it uses as much as digits as its factorization.

38438461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 37.

The square root of 38438461 is about 6199.8758858545. The cubic root of 38438461 is about 337.4856648690.

The spelling of 38438461 in words is "thirty-eight million, four hundred thirty-eight thousand, four hundred sixty-one".