1200538384 has 20 divisors (see below), whose sum is σ = 2382777180. Its totient is φ = 585628160.

The previous prime is 1200538379. The next prime is 1200538387. The reversal of 1200538384 is 4838350021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76947984 + 1123590400 = 8772^2 + 33520^2 .

It is a super-2 number, since 2×1200538384² = 2882584822914662912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1200538387) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 914389 + ... + 915700.

It is an arithmetic number, because the mean of its divisors is an integer number (119138859).

Almost surely, 2^1200538384 is an apocalyptic number.

It is an amenable number.

1200538384 is a deficient number, since it is larger than the sum of its proper divisors (1182238796).

1200538384 is a wasteful number, since it uses less digits than its factorization.

1200538384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830138 (or 1830132 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1200538384 is about 34648.7861836457. The cubic root of 1200538384 is about 1062.8174671914.

The spelling of 1200538384 in words is "one billion, two hundred million, five hundred thirty-eight thousand, three hundred eighty-four".