38631380749 has 8 divisors (see below), whose sum is σ = 41656856472. Its totient is φ = 35613595200.

The previous prime is 38631380719. The next prime is 38631380779. The reversal of 38631380749 is 94708313683.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38631380719) and next prime (38631380779).

It can be written as a sum of positive squares in 4 ways, for example, as 508818249 + 38122562500 = 22557^2 + 195250^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38631380749 - 2³³ = 30041446157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38631380696 and 38631380705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38631380719) 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, 1912102 + ... + 1932199.

It is an arithmetic number, because the mean of its divisors is an integer number (5207107059).

Almost surely, 2^38631380749 is an apocalyptic number.

It is an amenable number.

38631380749 is a deficient number, since it is larger than the sum of its proper divisors (3025475723).

38631380749 is a wasteful number, since it uses less digits than its factorization.

38631380749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845087.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 38631380749 in words is "thirty-eight billion, six hundred thirty-one million, three hundred eighty thousand, seven hundred forty-nine".