1442775618 has 64 divisors (see below), whose sum is σ = 3433104000. Its totient is φ = 447524352.

The previous prime is 1442775613. The next prime is 1442775623. The reversal of 1442775618 is 8165772441.

1442775618 is a `hidden beast` number, since 1 + 4 + 4 + 27 + 7 + 5 + 618 = 666.

It is an interprime number because it is at equal distance from previous prime (1442775613) and next prime (1442775623).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1442775613) 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, 72873 + ... + 90531.

It is an arithmetic number, because the mean of its divisors is an integer number (53642250).

Almost surely, 2^1442775618 is an apocalyptic number.

1442775618 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 1442775618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1716552000).

1442775618 is an abundant number, since it is smaller than the sum of its proper divisors (1990328382).

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

1442775618 is a wasteful number, since it uses less digits than its factorization.

1442775618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17776 (or 17770 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 1442775618 is about 37983.8862940590. The cubic root of 1442775618 is about 1129.9683124745.

The spelling of 1442775618 in words is "one billion, four hundred forty-two million, seven hundred seventy-five thousand, six hundred eighteen".