4138620885 has 160 divisors (see below), whose sum is σ = 8907148800. Its totient is φ = 1798433280.

The previous prime is 4138620877. The next prime is 4138620917. The reversal of 4138620885 is 5880268314.

4138620885 is a `hidden beast` number, since 4 + 13 + 8 + 620 + 8 + 8 + 5 = 666.

It is not a de Polignac number, because 4138620885 - 2³ = 4138620877 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4138620885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5836911 + ... + 5837619.

It is an arithmetic number, because the mean of its divisors is an integer number (55669680).

Almost surely, 2^4138620885 is an apocalyptic number.

4138620885 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4138620885 is an abundant number, since it is smaller than the sum of its proper divisors (4768527915).

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

4138620885 is a wasteful number, since it uses less digits than its factorization.

4138620885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 4138620885 is about 64332.1139478566. The cubic root of 4138620885 is about 1605.5304561599.

The spelling of 4138620885 in words is "four billion, one hundred thirty-eight million, six hundred twenty thousand, eight hundred eighty-five".