6146278861 has 4 divisors (see below), whose sum is σ = 6185427292. Its totient is φ = 6107130432.

The previous prime is 6146278843. The next prime is 6146278871. The reversal of 6146278861 is 1688726416.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3395276361 + 2751002500 = 58269^2 + 52450^2 .

It is a cyclic number.

It is not a de Polignac number, because 6146278861 - 2¹¹ = 6146276813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6146278871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19573980 + ... + 19574293.

It is an arithmetic number, because the mean of its divisors is an integer number (1546356823).

Almost surely, 2^6146278861 is an apocalyptic number.

It is an amenable number.

6146278861 is a deficient number, since it is larger than the sum of its proper divisors (39148431).

6146278861 is a wasteful number, since it uses less digits than its factorization.

6146278861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39148430.

The product of its digits is 774144, while the sum is 49.

The square root of 6146278861 is about 78398.2070011808. The cubic root of 6146278861 is about 1831.7692049419.

The spelling of 6146278861 in words is "six billion, one hundred forty-six million, two hundred seventy-eight thousand, eight hundred sixty-one".