1445045440 has 28 divisors (see below), whose sum is σ = 3441015216. Its totient is φ = 578018048.

The previous prime is 1445045431. The next prime is 1445045443. The reversal of 1445045440 is 445405441.

It is not an unprimeable number, because it can be changed into a prime (1445045443) 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 3 ways as a sum of consecutive naturals, for example, 2257564 + ... + 2258203.

Almost surely, 2^1445045440 is an apocalyptic number.

1445045440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445045440 is an abundant number, since it is smaller than the sum of its proper divisors (1995969776).

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

1445045440 is an equidigital number, since it uses as much as digits as its factorization.

1445045440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4515784 (or 4515774 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 1445045440 is about 38013.7533006148. The cubic root of 1445045440 is about 1130.5605697537.

The spelling of 1445045440 in words is "one billion, four hundred forty-five million, forty-five thousand, four hundred forty".