1368013140 has 72 divisors (see below), whose sum is σ = 4468850568. Its totient is φ = 336741120.

The previous prime is 1368013121. The next prime is 1368013151. The reversal of 1368013140 is 413108631.

It can be written as a sum of positive squares in 4 ways, for example, as 22297284 + 1345715856 = 4722^2 + 36684^2 .

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 23 ways as a sum of consecutive naturals, for example, 289971 + ... + 294650.

It is an arithmetic number, because the mean of its divisors is an integer number (62067369).

Almost surely, 2^1368013140 is an apocalyptic number.

1368013140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1368013140 is an abundant number, since it is smaller than the sum of its proper divisors (3100837428).

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

1368013140 is a wasteful number, since it uses less digits than its factorization.

1368013140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584649 (or 584644 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1368013140 is about 36986.6616498434. The cubic root of 1368013140 is about 1110.1033748379.

The spelling of 1368013140 in words is "one billion, three hundred sixty-eight million, thirteen thousand, one hundred forty".