2002999978 has 32 divisors (see below), whose sum is σ = 3526024320. Its totient is φ = 835453440.

The previous prime is 2002999961. The next prime is 2002999979. The reversal of 2002999978 is 8799992002.

It is not an unprimeable number, because it can be changed into a prime (2002999979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244513 + ... + 252571.

It is an arithmetic number, because the mean of its divisors is an integer number (110188260).

Almost surely, 2^2002999978 is an apocalyptic number.

2002999978 is a deficient number, since it is larger than the sum of its proper divisors (1523024342).

2002999978 is a wasteful number, since it uses less digits than its factorization.

2002999978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8542.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 2002999978 is about 44754.8877554173. The cubic root of 2002999978 is about 1260.5506910867.

The spelling of 2002999978 in words is "two billion, two million, nine hundred ninety-nine thousand, nine hundred seventy-eight".