9181900836 has 72 divisors (see below), whose sum is σ = 23669755200. Its totient is φ = 3000089664.

The previous prime is 9181900823. The next prime is 9181900877. The reversal of 9181900836 is 6380091819.

It is a junction number, because it is equal to n+sod(n) for n = 9181900791 and 9181900800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3400615 + ... + 3403313.

It is an arithmetic number, because the mean of its divisors is an integer number (328746600).

Almost surely, 2^9181900836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9181900836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11834877600).

9181900836 is an abundant number, since it is smaller than the sum of its proper divisors (14487854364).

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

9181900836 is a wasteful number, since it uses less digits than its factorization.

9181900836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545 (or 4540 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 9181900836 is about 95822.2356032252. The cubic root of 9181900836 is about 2094.0041242054.

The spelling of 9181900836 in words is "nine billion, one hundred eighty-one million, nine hundred thousand, eight hundred thirty-six".