508161885 has 192 divisors, whose sum is σ = 1117863936. Its totient is φ = 192360960.

The previous prime is 508161883. The next prime is 508161911. The reversal of 508161885 is 588161805.

It is a happy number.

It is not a de Polignac number, because 508161885 - 2¹ = 508161883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (508161881) 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 191 ways as a sum of consecutive naturals, for example, 10811932 + ... + 10811978.

It is an arithmetic number, because the mean of its divisors is an integer number (5822208).

Almost surely, 2^508161885 is an apocalyptic number.

508161885 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

508161885 is an abundant number, since it is smaller than the sum of its proper divisors (609702051).

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

508161885 is a wasteful number, since it uses less digits than its factorization.

508161885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 42.

The square root of 508161885 is about 22542.4462958216. The cubic root of 508161885 is about 797.9959657713.

It can be divided in two parts, 5081 and 61885, that added together give a palindrome (66966).

The spelling of 508161885 in words is "five hundred eight million, one hundred sixty-one thousand, eight hundred eighty-five".