1378836480 has 336 divisors, whose sum is σ = 5154747120. Its totient is φ = 313786368.

The previous prime is 1378836457. The next prime is 1378836491. The reversal of 1378836480 is 846388731.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6021006 + ... + 6021234.

Almost surely, 2^1378836480 is an apocalyptic number.

1378836480 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 1378836480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2577373560).

1378836480 is an abundant number, since it is smaller than the sum of its proper divisors (3775910640).

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

1378836480 is an equidigital number, since it uses as much as digits as its factorization.

1378836480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 1378836480 is about 37132.6874869030. The cubic root of 1378836480 is about 1113.0232976414.

The spelling of 1378836480 in words is "one billion, three hundred seventy-eight million, eight hundred thirty-six thousand, four hundred eighty".