8381053861 has 8 divisors (see below), whose sum is σ = 8498531480. Its totient is φ = 8263648512.

The previous prime is 8381053859. The next prime is 8381053883. The reversal of 8381053861 is 1683501838.

It can be written as a sum of positive squares in 4 ways, for example, as 51753636 + 8329300225 = 7194^2 + 91265^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8381053861 - 2¹ = 8381053859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8381053361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241351 + ... + 273883.

It is an arithmetic number, because the mean of its divisors is an integer number (1062316435).

Almost surely, 2^8381053861 is an apocalyptic number.

It is an amenable number.

8381053861 is a deficient number, since it is larger than the sum of its proper divisors (117477619).

8381053861 is a wasteful number, since it uses less digits than its factorization.

8381053861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36135.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 8381053861 is about 91548.0958895378. The cubic root of 8381053861 is about 2031.2632467510.

The spelling of 8381053861 in words is "eight billion, three hundred eighty-one million, fifty-three thousand, eight hundred sixty-one".