38236433557 has 4 divisors (see below), whose sum is σ = 43698781216. Its totient is φ = 32774085900.

The previous prime is 38236433461. The next prime is 38236433567. The reversal of 38236433557 is 75533463283.

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.

It is a cyclic number.

It is not a de Polignac number, because 38236433557 - 2³¹ = 36088949909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38236433557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38236433567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2731173819 + ... + 2731173832.

It is an arithmetic number, because the mean of its divisors is an integer number (10924695304).

Almost surely, 2^38236433557 is an apocalyptic number.

It is an amenable number.

38236433557 is a deficient number, since it is larger than the sum of its proper divisors (5462347659).

38236433557 is an equidigital number, since it uses as much as digits as its factorization.

38236433557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462347658.

The product of its digits is 5443200, while the sum is 49.

The spelling of 38236433557 in words is "thirty-eight billion, two hundred thirty-six million, four hundred thirty-three thousand, five hundred fifty-seven".