38231433693 has 6 divisors (see below), whose sum is σ = 55223182014. Its totient is φ = 25487622456.

The previous prime is 38231433683. The next prime is 38231433707. The reversal of 38231433693 is 39633413283.

It can be written as a sum of positive squares in only one way, i.e., 21922355844 + 16309077849 = 148062^2 + 127707^2 .

It is not a de Polignac number, because 38231433693 - 2⁴ = 38231433677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38231433683) 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 5 ways as a sum of consecutive naturals, for example, 2123968530 + ... + 2123968547.

It is an arithmetic number, because the mean of its divisors is an integer number (9203863669).

Almost surely, 2^38231433693 is an apocalyptic number.

It is an amenable number.

38231433693 is a deficient number, since it is larger than the sum of its proper divisors (16991748321).

38231433693 is a wasteful number, since it uses less digits than its factorization.

38231433693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247937083 (or 4247937080 counting only the distinct ones).

The product of its digits is 839808, while the sum is 45.

The spelling of 38231433693 in words is "thirty-eight billion, two hundred thirty-one million, four hundred thirty-three thousand, six hundred ninety-three".