9138072893 has 4 divisors (see below), whose sum is σ = 9143188320. Its totient is φ = 9132957468.

The previous prime is 9138072887. The next prime is 9138072899. The reversal of 9138072893 is 3982708319.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3982708319 = 4481 ⋅888799.

It is an interprime number because it is at equal distance from previous prime (9138072887) and next prime (9138072899).

It is a cyclic number.

It is not a de Polignac number, because 9138072893 - 2⁴ = 9138072877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138072899) 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, 2555033 + ... + 2558606.

It is an arithmetic number, because the mean of its divisors is an integer number (2285797080).

Almost surely, 2^9138072893 is an apocalyptic number.

It is an amenable number.

9138072893 is a deficient number, since it is larger than the sum of its proper divisors (5115427).

9138072893 is a wasteful number, since it uses less digits than its factorization.

9138072893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115426.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 9138072893 is about 95593.2680318023. The cubic root of 9138072893 is about 2090.6670408116.

The spelling of 9138072893 in words is "nine billion, one hundred thirty-eight million, seventy-two thousand, eight hundred ninety-three".