1368209824 has 24 divisors (see below), whose sum is σ = 2694635748. Its totient is φ = 683857920.

The previous prime is 1368209743. The next prime is 1368209837. The reversal of 1368209824 is 4289028631.

It can be written as a sum of positive squares in 2 ways, for example, as 981694224 + 386515600 = 31332^2 + 19660^2 .

It is a super-2 number, since 2×1368209824² = 3743996244980221952, which contains 22 as substring.

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, 109834 + ... + 121654.

Almost surely, 2^1368209824 is an apocalyptic number.

It is an amenable number.

1368209824 is a deficient number, since it is larger than the sum of its proper divisors (1326425924).

1368209824 is a wasteful number, since it uses less digits than its factorization.

1368209824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15448 (or 15440 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1368209824 is about 36989.3204046790. The cubic root of 1368209824 is about 1110.1565734276.

The spelling of 1368209824 in words is "one billion, three hundred sixty-eight million, two hundred nine thousand, eight hundred twenty-four".