4038169905 has 144 divisors (see below), whose sum is σ = 8963136000. Its totient is φ = 1645712640.

The previous prime is 4038169901. The next prime is 4038169907. The reversal of 4038169905 is 5099618304.

It is a happy number.

It is not a de Polignac number, because 4038169905 - 2² = 4038169901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (4038169901) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2019096 + ... + 2021094.

It is an arithmetic number, because the mean of its divisors is an integer number (62244000).

Almost surely, 2^4038169905 is an apocalyptic number.

4038169905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4038169905 is an abundant number, since it is smaller than the sum of its proper divisors (4924966095).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4038169905 is a wasteful number, since it uses less digits than its factorization.

4038169905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092 (or 2078 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 4038169905 is about 63546.5963289931. The cubic root of 4038169905 is about 1592.4343214182.

The spelling of 4038169905 in words is "four billion, thirty-eight million, one hundred sixty-nine thousand, nine hundred five".