1378729080 has 128 divisors (see below), whose sum is σ = 4612507200. Its totient is φ = 366322176.

The previous prime is 1378729013. The next prime is 1378729117. The reversal of 1378729080 is 809278731.

1378729080 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314262 + ... + 318618.

Almost surely, 2^1378729080 is an apocalyptic number.

1378729080 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 1378729080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2306253600).

1378729080 is an abundant number, since it is smaller than the sum of its proper divisors (3233778120).

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

1378729080 is a wasteful number, since it uses less digits than its factorization.

1378729080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670 (or 4660 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1378729080 is about 37131.2412935523. The cubic root of 1378729080 is about 1112.9943984432.

The spelling of 1378729080 in words is "one billion, three hundred seventy-eight million, seven hundred twenty-nine thousand, eighty".