38361621 has 4 divisors (see below), whose sum is σ = 51148832. Its totient is φ = 25574412.

The previous prime is 38361607. The next prime is 38361643. The reversal of 38361621 is 12616383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 38361621 - 2¹³ = 38353429 is a prime.

It is a super-2 number, since 2×38361621² = 2943227931495282, 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 (38361221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6393601 + ... + 6393606.

It is an arithmetic number, because the mean of its divisors is an integer number (12787208).

Almost surely, 2^38361621 is an apocalyptic number.

It is an amenable number.

38361621 is a deficient number, since it is larger than the sum of its proper divisors (12787211).

38361621 is a wasteful number, since it uses less digits than its factorization.

38361621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12787210.

The product of its digits is 5184, while the sum is 30.

The square root of 38361621 is about 6193.6758875485. The cubic root of 38361621 is about 337.2606324666.

The spelling of 38361621 in words is "thirty-eight million, three hundred sixty-one thousand, six hundred twenty-one".