8252349381 has 6 divisors (see below), whose sum is σ = 11920060230. Its totient is φ = 5501566248.

The previous prime is 8252349379. The next prime is 8252349407. The reversal of 8252349381 is 1839432528.

8252349381 is a `hidden beast` number, since 8 + 2 + 523 + 49 + 3 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5805068481 + 2447280900 = 76191^2 + 49470^2 .

It is not a de Polignac number, because 8252349381 - 2¹ = 8252349379 is a prime.

It is a super-2 number, since 2×8252349381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8252349361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 458463846 + ... + 458463863.

It is an arithmetic number, because the mean of its divisors is an integer number (1986676705).

Almost surely, 2^8252349381 is an apocalyptic number.

It is an amenable number.

8252349381 is a deficient number, since it is larger than the sum of its proper divisors (3667710849).

8252349381 is a wasteful number, since it uses less digits than its factorization.

8252349381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916927715 (or 916927712 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 8252349381 is about 90842.4426190754. The cubic root of 8252349381 is about 2020.8117984204.

The spelling of 8252349381 in words is "eight billion, two hundred fifty-two million, three hundred forty-nine thousand, three hundred eighty-one".