38361391 has 4 divisors (see below), whose sum is σ = 38619000. Its totient is φ = 38103784.

The previous prime is 38361377. The next prime is 38361397. The reversal of 38361391 is 19316383.

38361391 = 40² + 41² + ... + 486².

38361391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38361391 - 2⁹ = 38360879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38361397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128581 + ... + 128878.

It is an arithmetic number, because the mean of its divisors is an integer number (9654750).

Almost surely, 2^38361391 is an apocalyptic number.

38361391 is a deficient number, since it is larger than the sum of its proper divisors (257609).

38361391 is a wasteful number, since it uses less digits than its factorization.

38361391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257608.

The product of its digits is 11664, while the sum is 34.

The square root of 38361391 is about 6193.6573201946. The cubic root of 38361391 is about 337.2599584414.

The spelling of 38361391 in words is "thirty-eight million, three hundred sixty-one thousand, three hundred ninety-one".