38790026393 has 4 divisors (see below), whose sum is σ = 40127613540. Its totient is φ = 37452439248.

The previous prime is 38790026389. The next prime is 38790026413. The reversal of 38790026393 is 39362009783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39362009783 = 91151 ⋅431833.

It can be written as a sum of positive squares in 2 ways, for example, as 6801630784 + 31988395609 = 82472^2 + 178853^2 .

It is a cyclic number.

It is not a de Polignac number, because 38790026393 - 2² = 38790026389 is a prime.

It is a super-2 number, since 2×38790026393² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38790026333) 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, 668793530 + ... + 668793587.

It is an arithmetic number, because the mean of its divisors is an integer number (10031903385).

Almost surely, 2^38790026393 is an apocalyptic number.

It is an amenable number.

38790026393 is a deficient number, since it is larger than the sum of its proper divisors (1337587147).

38790026393 is a wasteful number, since it uses less digits than its factorization.

38790026393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337587146.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The spelling of 38790026393 in words is "thirty-eight billion, seven hundred ninety million, twenty-six thousand, three hundred ninety-three".