2188045078 has 16 divisors (see below), whose sum is σ = 3490318080. Its totient is φ = 1025168256.

The previous prime is 2188045049. The next prime is 2188045081. The reversal of 2188045078 is 8705408812.

It is a congruent 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, 132726 + ... + 148297.

It is an arithmetic number, because the mean of its divisors is an integer number (218144880).

Almost surely, 2^2188045078 is an apocalyptic number.

2188045078 is a deficient number, since it is larger than the sum of its proper divisors (1302273002).

2188045078 is a wasteful number, since it uses less digits than its factorization.

2188045078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281271.

The product of its (nonzero) digits is 143360, while the sum is 43.

The square root of 2188045078 is about 46776.5441006494. The cubic root of 2188045078 is about 1298.2313380056.

The spelling of 2188045078 in words is "two billion, one hundred eighty-eight million, forty-five thousand, seventy-eight".