6136586381 has 4 divisors (see below), whose sum is σ = 6197344764. Its totient is φ = 6075828000.

The previous prime is 6136586363. The next prime is 6136586387. The reversal of 6136586381 is 1836856316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3007974025 + 3128612356 = 54845^2 + 55934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6136586381 is a prime.

It is a super-2 number, since 2×6136586381² = 75315384822949354322, which 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 (6136586387) 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, 30379040 + ... + 30379241.

It is an arithmetic number, because the mean of its divisors is an integer number (1549336191).

Almost surely, 2^6136586381 is an apocalyptic number.

It is an amenable number.

6136586381 is a deficient number, since it is larger than the sum of its proper divisors (60758383).

6136586381 is a wasteful number, since it uses less digits than its factorization.

6136586381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60758382.

The product of its digits is 622080, while the sum is 47.

The square root of 6136586381 is about 78336.3669121820. The cubic root of 6136586381 is about 1830.8058183864.

The spelling of 6136586381 in words is "six billion, one hundred thirty-six million, five hundred eighty-six thousand, three hundred eighty-one".