1385260578 has 48 divisors (see below), whose sum is σ = 3237998400. Its totient is φ = 425479392.

The previous prime is 1385260573. The next prime is 1385260619. The reversal of 1385260578 is 8750625831.

1385260578 is a `hidden beast` number, since 1 + 38 + 5 + 2 + 605 + 7 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1385260571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135225 + ... + 145107.

It is an arithmetic number, because the mean of its divisors is an integer number (67458300).

Almost surely, 2^1385260578 is an apocalyptic number.

1385260578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1385260578 is an abundant number, since it is smaller than the sum of its proper divisors (1852737822).

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

1385260578 is a wasteful number, since it uses less digits than its factorization.

1385260578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10503 (or 10500 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 1385260578 is about 37219.0888926637. The cubic root of 1385260578 is about 1114.7491718624.

The spelling of 1385260578 in words is "one billion, three hundred eighty-five million, two hundred sixty thousand, five hundred seventy-eight".