6860186978 has 6 divisors (see below), whose sum is σ = 10290456171. Its totient is φ = 3430034922.

The previous prime is 6860186897. The next prime is 6860186981. The reversal of 6860186978 is 8796810686.

It can be written as a sum of positive squares in only one way, i.e., 3430093489 + 3430093489 = 58567^2 + 58567^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=58567.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 87851 + ... + 146417.

Almost surely, 2^6860186978 is an apocalyptic number.

6860186978 is a deficient number, since it is larger than the sum of its proper divisors (3430269193).

6860186978 is an frugal number, since it uses more digits than its factorization.

6860186978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117136 (or 58569 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 6860186978 is about 82826.2457075051. The cubic root of 6860186978 is about 1900.1095946017.

The spelling of 6860186978 in words is "six billion, eight hundred sixty million, one hundred eighty-six thousand, nine hundred seventy-eight".