1378780088 has 64 divisors (see below), whose sum is σ = 2997086400. Its totient is φ = 582451200.

The previous prime is 1378780043. The next prime is 1378780093. The reversal of 1378780088 is 8800878731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1792568 + ... + 1793336.

It is an arithmetic number, because the mean of its divisors is an integer number (46829475).

Almost surely, 2^1378780088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378780088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498543200).

1378780088 is an abundant number, since it is smaller than the sum of its proper divisors (1618306312).

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

1378780088 is a wasteful number, since it uses less digits than its factorization.

1378780088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 50.

The square root of 1378780088 is about 37131.9281481584. The cubic root of 1378780088 is about 1113.0081238659.

The spelling of 1378780088 in words is "one billion, three hundred seventy-eight million, seven hundred eighty thousand, eighty-eight".