1445631318 has 12 divisors (see below), whose sum is σ = 3132201228. Its totient is φ = 481877100.

The previous prime is 1445631301. The next prime is 1445631371. The reversal of 1445631318 is 8131365441.

1445631318 is a `hidden beast` number, since 1 + 4 + 4 + 5 + 631 + 3 + 18 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40156408 + ... + 40156443.

It is an arithmetic number, because the mean of its divisors is an integer number (261016769).

Almost surely, 2^1445631318 is an apocalyptic number.

1445631318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1445631318 is an abundant number, since it is smaller than the sum of its proper divisors (1686569910).

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

1445631318 is a wasteful number, since it uses less digits than its factorization.

1445631318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80312859 (or 80312856 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 1445631318 is about 38021.4586516614. The cubic root of 1445631318 is about 1130.7133402826.

Adding to 1445631318 its reverse (8131365441), we get a palindrome (9576996759).

The spelling of 1445631318 in words is "one billion, four hundred forty-five million, six hundred thirty-one thousand, three hundred eighteen".