38345960813 has 4 divisors (see below), whose sum is σ = 38346415968. Its totient is φ = 38345505660.

The previous prime is 38345960789. The next prime is 38345960831. The reversal of 38345960813 is 31806954383.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31806954383 = 71 ⋅447985273.

It is a cyclic number.

It is not a de Polignac number, because 38345960813 - 2¹⁶ = 38345895277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38345960843) 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, 60143 + ... + 283388.

It is an arithmetic number, because the mean of its divisors is an integer number (9586603992).

Almost surely, 2^38345960813 is an apocalyptic number.

It is an amenable number.

38345960813 is a deficient number, since it is larger than the sum of its proper divisors (455155).

38345960813 is a wasteful number, since it uses less digits than its factorization.

38345960813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455154.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 38345960813 in words is "thirty-eight billion, three hundred forty-five million, nine hundred sixty thousand, eight hundred thirteen".