2864151978 has 16 divisors (see below), whose sum is σ = 5732868960. Its totient is φ = 953956496.

The previous prime is 2864151973. The next prime is 2864151989. The reversal of 2864151978 is 8791514682.

It is a self number, because there is not a number n which added to its sum of digits gives 2864151978.

It is not an unprimeable number, because it can be changed into a prime (2864151973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182025 + ... + 197132.

It is an arithmetic number, because the mean of its divisors is an integer number (358304310).

Almost surely, 2^2864151978 is an apocalyptic number.

2864151978 is an abundant number, since it is smaller than the sum of its proper divisors (2868716982).

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

2864151978 is a wasteful number, since it uses less digits than its factorization.

2864151978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380421.

The product of its digits is 967680, while the sum is 51.

The square root of 2864151978 is about 53517.7725433337. The cubic root of 2864151978 is about 1420.1428108039.

The spelling of 2864151978 in words is "two billion, eight hundred sixty-four million, one hundred fifty-one thousand, nine hundred seventy-eight".