1378568760 has 128 divisors (see below), whose sum is σ = 4520448000. Its totient is φ = 334817280.

The previous prime is 1378568759. The next prime is 1378568761. The reversal of 1378568760 is 678658731.

It is an interprime number because it is at equal distance from previous prime (1378568759) and next prime (1378568761).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378568761) 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 31 ways as a sum of consecutive naturals, for example, 52341 + ... + 74139.

It is an arithmetic number, because the mean of its divisors is an integer number (35316000).

Almost surely, 2^1378568760 is an apocalyptic number.

1378568760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378568760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2260224000).

1378568760 is an abundant number, since it is smaller than the sum of its proper divisors (3141879240).

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

1378568760 is a wasteful number, since it uses less digits than its factorization.

1378568760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21861 (or 21857 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The square root of 1378568760 is about 37129.0824018047. The cubic root of 1378568760 is about 1112.9512567360.

The spelling of 1378568760 in words is "one billion, three hundred seventy-eight million, five hundred sixty-eight thousand, seven hundred sixty".