2071878866 has 16 divisors (see below), whose sum is σ = 3117502080. Its totient is φ = 1032717840.

The previous prime is 2071878829. The next prime is 2071878877. The reversal of 2071878866 is 6688781702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1621820 + ... + 1623096.

It is an arithmetic number, because the mean of its divisors is an integer number (194843880).

Almost surely, 2^2071878866 is an apocalyptic number.

2071878866 is a deficient number, since it is larger than the sum of its proper divisors (1045623214).

2071878866 is a wasteful number, since it uses less digits than its factorization.

2071878866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169.

The product of its (nonzero) digits is 1806336, while the sum is 53.

The square root of 2071878866 is about 45517.8961069160. The cubic root of 2071878866 is about 1274.8373732857.

The spelling of 2071878866 in words is "two billion, seventy-one million, eight hundred seventy-eight thousand, eight hundred sixty-six".