2864646978 has 8 divisors (see below), whose sum is σ = 5729293968. Its totient is φ = 954882324.

The previous prime is 2864646973. The next prime is 2864646991. The reversal of 2864646978 is 8796464682.

2864646978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2864646978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2864646973) 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, 238720576 + ... + 238720587.

It is an arithmetic number, because the mean of its divisors is an integer number (716161746).

Almost surely, 2^2864646978 is an apocalyptic number.

2864646978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2864646978 is a wasteful number, since it uses less digits than its factorization.

2864646978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477441168.

The product of its digits is 27869184, while the sum is 60.

The square root of 2864646978 is about 53522.3969754719. The cubic root of 2864646978 is about 1420.2246186366.

The spelling of 2864646978 in words is "two billion, eight hundred sixty-four million, six hundred forty-six thousand, nine hundred seventy-eight".