1200115536 has 80 divisors (see below), whose sum is σ = 3142400064. Its totient is φ = 394647552.

The previous prime is 1200115513. The next prime is 1200115541. The reversal of 1200115536 is 6355110021.

It is a super-3 number, since 3×1200115536³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1227880 + ... + 1228856.

Almost surely, 2^1200115536 is an apocalyptic number.

1200115536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1200115536 is an abundant number, since it is smaller than the sum of its proper divisors (1942284528).

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

1200115536 is a wasteful number, since it uses less digits than its factorization.

1200115536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1200115536 is about 34642.6837297574. The cubic root of 1200115536 is about 1062.6926723438.

Adding to 1200115536 its reverse (6355110021), we get a palindrome (7555225557).

The spelling of 1200115536 in words is "one billion, two hundred million, one hundred fifteen thousand, five hundred thirty-six".