9181909142 has 32 divisors (see below), whose sum is σ = 15983800320. Its totient is φ = 3874534560.

The previous prime is 9181909111. The next prime is 9181909171. The reversal of 9181909142 is 2419091819.

It is a junction number, because it is equal to n+sod(n) for n = 9181909093 and 9181909102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394592 + ... + 417212.

It is an arithmetic number, because the mean of its divisors is an integer number (499493760).

Almost surely, 2^9181909142 is an apocalyptic number.

9181909142 is a deficient number, since it is larger than the sum of its proper divisors (6801891178).

9181909142 is a wasteful number, since it uses less digits than its factorization.

9181909142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23076.

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 9181909142 is about 95822.2789438865. The cubic root of 9181909142 is about 2094.0047556213.

The spelling of 9181909142 in words is "nine billion, one hundred eighty-one million, nine hundred nine thousand, one hundred forty-two".