1200013652 has 12 divisors (see below), whose sum is σ = 2105425140. Its totient is φ = 598463616.

The previous prime is 1200013613. The next prime is 1200013679. The reversal of 1200013652 is 2563100021.

It can be written as a sum of positive squares in 2 ways, for example, as 509585476 + 690428176 = 22574^2 + 26276^2 .

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 3 ways as a sum of consecutive naturals, for example, 384053 + ... + 387164.

It is an arithmetic number, because the mean of its divisors is an integer number (175452095).

Almost surely, 2^1200013652 is an apocalyptic number.

It is an amenable number.

1200013652 is a deficient number, since it is larger than the sum of its proper divisors (905411488).

1200013652 is a wasteful number, since it uses less digits than its factorization.

1200013652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771610 (or 771608 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1200013652 is about 34641.2132004640. The cubic root of 1200013652 is about 1062.6625990048.

Adding to 1200013652 its reverse (2563100021), we get a palindrome (3763113673).

It can be divided in two parts, 12000 and 13652, that added together give a palindrome (25652).

The spelling of 1200013652 in words is "one billion, two hundred million, thirteen thousand, six hundred fifty-two".