2002378178 has 16 divisors (see below), whose sum is σ = 3062403960. Its totient is φ = 981766656.

The previous prime is 2002378121. The next prime is 2002378187. The reversal of 2002378178 is 8718732002.

It can be written as a sum of positive squares in 4 ways, for example, as 1693075609 + 309302569 = 41147^2 + 17587^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26201 + ... + 68492.

Almost surely, 2^2002378178 is an apocalyptic number.

2002378178 is a deficient number, since it is larger than the sum of its proper divisors (1060025782).

2002378178 is a wasteful number, since it uses less digits than its factorization.

2002378178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94901.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 2002378178 is about 44747.9404889208. The cubic root of 2002378178 is about 1260.4202381745.

The spelling of 2002378178 in words is "two billion, two million, three hundred seventy-eight thousand, one hundred seventy-eight".