3278871861 has 8 divisors (see below), whose sum is σ = 4372393824. Its totient is φ = 2185632240.

The previous prime is 3278871839. The next prime is 3278871899. The reversal of 3278871861 is 1681788723.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3278871861 - 2¹¹ = 3278869813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3278871811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41811 + ... + 91136.

It is an arithmetic number, because the mean of its divisors is an integer number (546549228).

Almost surely, 2^3278871861 is an apocalyptic number.

It is an amenable number.

3278871861 is a deficient number, since it is larger than the sum of its proper divisors (1093521963).

3278871861 is a wasteful number, since it uses less digits than its factorization.

3278871861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141171.

The product of its digits is 903168, while the sum is 51.

The square root of 3278871861 is about 57261.4343253817. The cubic root of 3278871861 is about 1485.6214052967.

The spelling of 3278871861 in words is "three billion, two hundred seventy-eight million, eight hundred seventy-one thousand, eight hundred sixty-one".