1380255618 has 48 divisors (see below), whose sum is σ = 3220966944. Its totient is φ = 393160320.

The previous prime is 1380255607. The next prime is 1380255623. The reversal of 1380255618 is 8165520831.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 92113 + ... + 106043.

It is an arithmetic number, because the mean of its divisors is an integer number (67103478).

Almost surely, 2^1380255618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380255618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1610483472).

1380255618 is an abundant number, since it is smaller than the sum of its proper divisors (1840711326).

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

1380255618 is a wasteful number, since it uses less digits than its factorization.

1380255618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14287 (or 14280 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 1380255618 is about 37151.7915853327. The cubic root of 1380255618 is about 1113.4050185316.

The spelling of 1380255618 in words is "one billion, three hundred eighty million, two hundred fifty-five thousand, six hundred eighteen".