8348861578 has 4 divisors (see below), whose sum is σ = 12523292370. Its totient is φ = 4174430788.

The previous prime is 8348861461. The next prime is 8348861579. The reversal of 8348861578 is 8751688438.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 6842102089 + 1506759489 = 82717^2 + 38817^2 .

It is not an unprimeable number, because it can be changed into a prime (8348861579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2087215393 + ... + 2087215396.

Almost surely, 2^8348861578 is an apocalyptic number.

8348861578 is a deficient number, since it is larger than the sum of its proper divisors (4174430792).

8348861578 is a wasteful number, since it uses less digits than its factorization.

8348861578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4174430791.

The product of its digits is 10321920, while the sum is 58.

The square root of 8348861578 is about 91372.1050321158. The cubic root of 8348861578 is about 2028.6591627668.

The spelling of 8348861578 in words is "eight billion, three hundred forty-eight million, eight hundred sixty-one thousand, five hundred seventy-eight".