4002005155 has 8 divisors (see below), whose sum is σ = 4834638000. Its totient is φ = 3180116256.

The previous prime is 4002005153. The next prime is 4002005213. The reversal of 4002005155 is 5515002004.

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

It is a cyclic number.

It is not a de Polignac number, because 4002005155 - 2¹ = 4002005153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4002005153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2685165 + ... + 2686654.

It is an arithmetic number, because the mean of its divisors is an integer number (604329750).

Almost surely, 2^4002005155 is an apocalyptic number.

4002005155 is a deficient number, since it is larger than the sum of its proper divisors (832632845).

4002005155 is a wasteful number, since it uses less digits than its factorization.

4002005155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5371973.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 4002005155 is about 63261.4033593944. The cubic root of 4002005155 is about 1587.6662564215. Note that the first 3 decimals are identical.

Adding to 4002005155 its reverse (5515002004), we get a palindrome (9517007159).

The spelling of 4002005155 in words is "four billion, two million, five thousand, one hundred fifty-five".