8545363381 has 4 divisors (see below), whose sum is σ = 8566257100. Its totient is φ = 8524469664.

The previous prime is 8545363369. The next prime is 8545363399. The reversal of 8545363381 is 1833635458.

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 3786433156 + 4758930225 = 61534^2 + 68985^2 .

It is a cyclic number.

It is not a de Polignac number, because 8545363381 - 2⁵ = 8545363349 is a prime.

It is a super-2 number, since 2×8545363381² (a number of 21 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 (8545363301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10446246 + ... + 10447063.

It is an arithmetic number, because the mean of its divisors is an integer number (2141564275).

Almost surely, 2^8545363381 is an apocalyptic number.

It is an amenable number.

8545363381 is a deficient number, since it is larger than the sum of its proper divisors (20893719).

8545363381 is a wasteful number, since it uses less digits than its factorization.

8545363381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20893718.

The product of its digits is 1036800, while the sum is 46.

The square root of 8545363381 is about 92441.1346804008. The cubic root of 8545363381 is about 2044.4516541208.

The spelling of 8545363381 in words is "eight billion, five hundred forty-five million, three hundred sixty-three thousand, three hundred eighty-one".