900188140 has 12 divisors (see below), whose sum is σ = 1890395136. Its totient is φ = 360075248.

The previous prime is 900188117. The next prime is 900188143. The reversal of 900188140 is 41881009.

It is not an unprimeable number, because it can be changed into a prime (900188143) 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 3 ways as a sum of consecutive naturals, for example, 22504684 + ... + 22504723.

It is an arithmetic number, because the mean of its divisors is an integer number (157532928).

Almost surely, 2^900188140 is an apocalyptic number.

It is an amenable number.

900188140 is an abundant number, since it is smaller than the sum of its proper divisors (990206996).

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

900188140 is a wasteful number, since it uses less digits than its factorization.

900188140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45009416 (or 45009414 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 900188140 is about 30003.1355028104. The cubic root of 900188140 is about 965.5566566489.

The spelling of 900188140 in words is "nine hundred million, one hundred eighty-eight thousand, one hundred forty".