1382565618 has 64 divisors (see below), whose sum is σ = 3544197120. Its totient is φ = 391315536.

The previous prime is 1382565617. The next prime is 1382565623. The reversal of 1382565618 is 8165652831.

1382565618 is a `hidden beast` number, since 1 + 3 + 8 + 25 + 6 + 5 + 618 = 666.

It is a super-2 number, since 2×1382565618² = 3822975376151443848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1382565617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23355 + ... + 57537.

It is an arithmetic number, because the mean of its divisors is an integer number (55378080).

Almost surely, 2^1382565618 is an apocalyptic number.

1382565618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1382565618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1772098560).

1382565618 is an abundant number, since it is smaller than the sum of its proper divisors (2161631502).

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

1382565618 is a wasteful number, since it uses less digits than its factorization.

1382565618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34308 (or 34302 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 1382565618 is about 37182.8672643733. The cubic root of 1382565618 is about 1114.0258050186.

The spelling of 1382565618 in words is "one billion, three hundred eighty-two million, five hundred sixty-five thousand, six hundred eighteen".