381136613593 has 4 divisors (see below), whose sum is σ = 381216038400. Its totient is φ = 381057188788.

The previous prime is 381136613587. The next prime is 381136613603. The reversal of 381136613593 is 395316631183.

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: 395316631183 = 31 ⋅12752149393.

It is a cyclic number.

It is not a de Polignac number, because 381136613593 - 2¹³ = 381136605401 is a prime.

It is a super-2 number, since 2×381136613593² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381136616593) 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, 39705205 + ... + 39714802.

It is an arithmetic number, because the mean of its divisors is an integer number (95304009600).

Almost surely, 2^381136613593 is an apocalyptic number.

It is an amenable number.

381136613593 is a deficient number, since it is larger than the sum of its proper divisors (79424807).

381136613593 is an equidigital number, since it uses as much as digits as its factorization.

381136613593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79424806.

The product of its digits is 1049760, while the sum is 49.

The spelling of 381136613593 in words is "three hundred eighty-one billion, one hundred thirty-six million, six hundred thirteen thousand, five hundred ninety-three".