1378762560 has 672 divisors, whose sum is σ = 5991148800. Its totient is φ = 294617088.

The previous prime is 1378762547. The next prime is 1378762643. The reversal of 1378762560 is 652678731.

1378762560 is a `hidden beast` number, since 1 + 3 + 7 + 87 + 6 + 2 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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 95 ways as a sum of consecutive naturals, for example, 9253366 + ... + 9253514.

It is an arithmetic number, because the mean of its divisors is an integer number (8915400).

Almost surely, 2^1378762560 is an apocalyptic number.

1378762560 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 1378762560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2995574400).

1378762560 is an abundant number, since it is smaller than the sum of its proper divisors (4612386240).

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

1378762560 is a wasteful number, since it uses less digits than its factorization.

1378762560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 1378762560 is about 37131.6921241141. The cubic root of 1378762560 is about 1113.0034074045.

The spelling of 1378762560 in words is "one billion, three hundred seventy-eight million, seven hundred sixty-two thousand, five hundred sixty".