1200540188 has 24 divisors (see below), whose sum is σ = 2181691680. Its totient is φ = 577601280.

The previous prime is 1200540163. The next prime is 1200540217. The reversal of 1200540188 is 8810450021.

It is a self number, because there is not a number n which added to its sum of digits gives 1200540188.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38168 + ... + 62111.

It is an arithmetic number, because the mean of its divisors is an integer number (90903820).

Almost surely, 2^1200540188 is an apocalyptic number.

It is an amenable number.

1200540188 is a deficient number, since it is larger than the sum of its proper divisors (981151492).

1200540188 is a wasteful number, since it uses less digits than its factorization.

1200540188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100397 (or 100395 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 1200540188 is about 34648.8122162939. The cubic root of 1200540188 is about 1062.8179995419.

The spelling of 1200540188 in words is "one billion, two hundred million, five hundred forty thousand, one hundred eighty-eight".