2867145778 has 32 divisors (see below), whose sum is σ = 5219126784. Its totient is φ = 1153185792.

The previous prime is 2867145767. The next prime is 2867145791. The reversal of 2867145778 is 8775417682.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66951 + ... + 101077.

It is an arithmetic number, because the mean of its divisors is an integer number (163097712).

Almost surely, 2^2867145778 is an apocalyptic number.

2867145778 is a deficient number, since it is larger than the sum of its proper divisors (2351981006).

2867145778 is a wasteful number, since it uses less digits than its factorization.

2867145778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34506.

The product of its digits is 5268480, while the sum is 55.

The square root of 2867145778 is about 53545.7353857429. The cubic root of 2867145778 is about 1420.6374473874.

The spelling of 2867145778 in words is "two billion, eight hundred sixty-seven million, one hundred forty-five thousand, seven hundred seventy-eight".