1378730880 has 192 divisors, whose sum is σ = 4842817200. Its totient is φ = 361340928.

The previous prime is 1378730867. The next prime is 1378730917. The reversal of 1378730880 is 880378731.

It is a tau number, because it is divible by the number of its divisors (192).

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 23 ways as a sum of consecutive naturals, for example, 337812 + ... + 341868.

Almost surely, 2^1378730880 is an apocalyptic number.

1378730880 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 1378730880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2421408600).

1378730880 is an abundant number, since it is smaller than the sum of its proper divisors (3464086320).

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

1378730880 is a wasteful number, since it uses less digits than its factorization.

1378730880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4141 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 1378730880 is about 37131.2655318937. The cubic root of 1378730880 is about 1112.9948827997.

The spelling of 1378730880 in words is "one billion, three hundred seventy-eight million, seven hundred thirty thousand, eight hundred eighty".