4138751391 has 8 divisors (see below), whose sum is σ = 5521993344. Its totient is φ = 2757338520.

The previous prime is 4138751389. The next prime is 4138751401. The reversal of 4138751391 is 1931578314.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4138751391 - 2¹ = 4138751389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138750391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451981 + ... + 461046.

It is an arithmetic number, because the mean of its divisors is an integer number (690249168).

Almost surely, 2^4138751391 is an apocalyptic number.

4138751391 is a deficient number, since it is larger than the sum of its proper divisors (1383241953).

4138751391 is a wasteful number, since it uses less digits than its factorization.

4138751391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914541.

The product of its digits is 90720, while the sum is 42.

The square root of 4138751391 is about 64333.1282544227. The cubic root of 4138751391 is about 1605.5473320840.

The spelling of 4138751391 in words is "four billion, one hundred thirty-eight million, seven hundred fifty-one thousand, three hundred ninety-one".