6187278249 has 12 divisors (see below), whose sum is σ = 8938689396. Its totient is φ = 4124155392.

The previous prime is 6187278241. The next prime is 6187278287. The reversal of 6187278249 is 9428727816.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3899378025 + 2287900224 = 62445^2 + 47832^2 .

It is not a de Polignac number, because 6187278249 - 2³ = 6187278241 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6187278195 and 6187278204.

It is not an unprimeable number, because it can be changed into a prime (6187278241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1377 + ... + 111249.

It is an arithmetic number, because the mean of its divisors is an integer number (744890783).

Almost surely, 2^6187278249 is an apocalyptic number.

It is an amenable number.

6187278249 is a deficient number, since it is larger than the sum of its proper divisors (2751411147).

6187278249 is a wasteful number, since it uses less digits than its factorization.

6187278249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116136 (or 116133 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 6187278249 is about 78659.2540582480. The cubic root of 6187278249 is about 1835.8331837915.

The spelling of 6187278249 in words is "six billion, one hundred eighty-seven million, two hundred seventy-eight thousand, two hundred forty-nine".