238459721093 has 4 divisors (see below), whose sum is σ = 260137877568. Its totient is φ = 216781564620.

The previous prime is 238459721083. The next prime is 238459721197. The reversal of 238459721093 is 390127954832.

238459721093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 238459721093 - 2²² = 238455526789 is a prime.

It is a super-2 number, since 2×238459721093² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238459721023) 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 3 ways as a sum of consecutive naturals, for example, 10839078221 + ... + 10839078242.

It is an arithmetic number, because the mean of its divisors is an integer number (65034469392).

Almost surely, 2^238459721093 is an apocalyptic number.

It is an amenable number.

238459721093 is a deficient number, since it is larger than the sum of its proper divisors (21678156475).

238459721093 is a wasteful number, since it uses less digits than its factorization.

238459721093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21678156474.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 238459721093 in words is "two hundred thirty-eight billion, four hundred fifty-nine million, seven hundred twenty-one thousand, ninety-three".