38912678045 has 4 divisors (see below), whose sum is σ = 46695213660. Its totient is φ = 31130142432.

The previous prime is 38912678039. The next prime is 38912678047. The reversal of 38912678045 is 54087621983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54087621983 = 217519 ⋅248657.

It can be written as a sum of positive squares in 2 ways, for example, as 5395490116 + 33517187929 = 73454^2 + 183077^2 .

It is a cyclic number.

It is not a de Polignac number, because 38912678045 - 2⁶ = 38912677981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38912678047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3891267800 + ... + 3891267809.

It is an arithmetic number, because the mean of its divisors is an integer number (11673803415).

It is a 1-persistent number, because it is pandigital, but 2⋅38912678045 = 77825356090 is not.

Almost surely, 2^38912678045 is an apocalyptic number.

It is an amenable number.

38912678045 is a deficient number, since it is larger than the sum of its proper divisors (7782535615).

38912678045 is an equidigital number, since it uses as much as digits as its factorization.

38912678045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7782535614.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 38912678045 in words is "thirty-eight billion, nine hundred twelve million, six hundred seventy-eight thousand, forty-five".