1381860608 has 72 divisors (see below), whose sum is σ = 2956507008. Its totient is φ = 642926592.

The previous prime is 1381860607. The next prime is 1381860673. The reversal of 1381860608 is 8060681831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381860607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214685 + ... + 221027.

Almost surely, 2^1381860608 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 1381860608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478253504).

1381860608 is an abundant number, since it is smaller than the sum of its proper divisors (1574646400).

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

1381860608 is an equidigital number, since it uses as much as digits as its factorization.

1381860608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419 (or 6405 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 1381860608 is about 37173.3857484088. The cubic root of 1381860608 is about 1113.8364148829.

The spelling of 1381860608 in words is "one billion, three hundred eighty-one million, eight hundred sixty thousand, six hundred eight".