1368824691 has 32 divisors (see below), whose sum is σ = 2079931392. Its totient is φ = 794344320.

The previous prime is 1368824671. The next prime is 1368824701. The reversal of 1368824691 is 1964288631.

It is not a de Polignac number, because 1368824691 - 2⁵ = 1368824659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1368824691.

It is not an unprimeable number, because it can be changed into a prime (1368824651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52941 + ... + 74433.

It is an arithmetic number, because the mean of its divisors is an integer number (64997856).

Almost surely, 2^1368824691 is an apocalyptic number.

1368824691 is a deficient number, since it is larger than the sum of its proper divisors (711106701).

1368824691 is a wasteful number, since it uses less digits than its factorization.

1368824691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21603.

The product of its digits is 497664, while the sum is 48.

The square root of 1368824691 is about 36997.6308836120. The cubic root of 1368824691 is about 1110.3228482204.

The spelling of 1368824691 in words is "one billion, three hundred sixty-eight million, eight hundred twenty-four thousand, six hundred ninety-one".