1368398745 has 96 divisors (see below), whose sum is σ = 2921610240. Its totient is φ = 605283840.

The previous prime is 1368398743. The next prime is 1368398767. The reversal of 1368398745 is 5478938631.

It is not a de Polignac number, because 1368398745 - 2¹ = 1368398743 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1368398691 and 1368398700.

It is not an unprimeable number, because it can be changed into a prime (1368398743) 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 95 ways as a sum of consecutive naturals, for example, 201729 + ... + 208401.

It is an arithmetic number, because the mean of its divisors is an integer number (30433440).

Almost surely, 2^1368398745 is an apocalyptic number.

1368398745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1368398745 is an abundant number, since it is smaller than the sum of its proper divisors (1553211495).

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

1368398745 is a wasteful number, since it uses less digits than its factorization.

1368398745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732 (or 6719 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 1368398745 is about 36991.8740401186. The cubic root of 1368398745 is about 1110.2076675005.

The spelling of 1368398745 in words is "one billion, three hundred sixty-eight million, three hundred ninety-eight thousand, seven hundred forty-five".