2005778974 has 8 divisors (see below), whose sum is σ = 3018469608. Its totient is φ = 999622440.

The previous prime is 2005778959. The next prime is 2005778981. The reversal of 2005778974 is 4798775002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1632757 + ... + 1633984.

It is an arithmetic number, because the mean of its divisors is an integer number (377308701).

Almost surely, 2^2005778974 is an apocalyptic number.

2005778974 is a deficient number, since it is larger than the sum of its proper divisors (1012690634).

2005778974 is a wasteful number, since it uses less digits than its factorization.

2005778974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267050.

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 2005778974 is about 44785.9238377417. The cubic root of 2005778974 is about 1261.1333914601.

The spelling of 2005778974 in words is "two billion, five million, seven hundred seventy-eight thousand, nine hundred seventy-four".