38751381 has 24 divisors (see below), whose sum is σ = 59866560. Its totient is φ = 24068736.

The previous prime is 38751373. The next prime is 38751407. The reversal of 38751381 is 18315783.

38751381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38751381 - 2³ = 38751373 is a prime.

It is a super-2 number, since 2×38751381² = 3003339058814322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38751311) 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 23 ways as a sum of consecutive naturals, for example, 14530 + ... + 16988.

It is an arithmetic number, because the mean of its divisors is an integer number (2494440).

Almost surely, 2^38751381 is an apocalyptic number.

It is an amenable number.

38751381 is a deficient number, since it is larger than the sum of its proper divisors (21115179).

38751381 is a wasteful number, since it uses less digits than its factorization.

38751381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585 (or 2582 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 38751381 is about 6225.0607225954. The cubic root of 38751381 is about 338.3989925443.

The spelling of 38751381 in words is "thirty-eight million, seven hundred fifty-one thousand, three hundred eighty-one".