308245188868 has 24 divisors (see below), whose sum is σ = 541200904664. Its totient is φ = 153616953600.

The previous prime is 308245188851. The next prime is 308245188869. The reversal of 308245188868 is 868881542803.

It can be written as a sum of positive squares in 4 ways, for example, as 122456603844 + 185788585024 = 349938^2 + 431032^2 .

It is a super-2 number, since 2×308245188868² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (308245188869) 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, 2024278 + ... + 2171218.

Almost surely, 2^308245188868 is an apocalyptic number.

It is an amenable number.

308245188868 is a deficient number, since it is larger than the sum of its proper divisors (232955715796).

308245188868 is a wasteful number, since it uses less digits than its factorization.

308245188868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148663 (or 148661 counting only the distinct ones).

The product of its (nonzero) digits is 23592960, while the sum is 61.

The spelling of 308245188868 in words is "three hundred eight billion, two hundred forty-five million, one hundred eighty-eight thousand, eight hundred sixty-eight".