4002778851 has 8 divisors (see below), whose sum is σ = 5410148880. Its totient is φ = 2631964032.

The previous prime is 4002778841. The next prime is 4002778907. The reversal of 4002778851 is 1588772004.

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

It is not a de Polignac number, because 4002778851 - 2⁷ = 4002778723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4002778841) by changing a digit.

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, 9138546 + ... + 9138983.

It is an arithmetic number, because the mean of its divisors is an integer number (676268610).

Almost surely, 2^4002778851 is an apocalyptic number.

4002778851 is a deficient number, since it is larger than the sum of its proper divisors (1407370029).

4002778851 is a wasteful number, since it uses less digits than its factorization.

4002778851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18277605.

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 4002778851 is about 63267.5181352959. The cubic root of 4002778851 is about 1587.7685627932.

The spelling of 4002778851 in words is "four billion, two million, seven hundred seventy-eight thousand, eight hundred fifty-one".