1445216045 has 24 divisors (see below), whose sum is σ = 2172593304. Its totient is φ = 914772096.

The previous prime is 1445215991. The next prime is 1445216051. The reversal of 1445216045 is 5406125441.

It can be written as a sum of positive squares in 4 ways, for example, as 187662601 + 1257553444 = 13699^2 + 35462^2 .

It is not a de Polignac number, because 1445216045 - 2¹² = 1445211949 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 223694 + ... + 230063.

It is an arithmetic number, because the mean of its divisors is an integer number (90524721).

Almost surely, 2^1445216045 is an apocalyptic number.

It is an amenable number.

1445216045 is a deficient number, since it is larger than the sum of its proper divisors (727377259).

1445216045 is a wasteful number, since it uses less digits than its factorization.

1445216045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453789 (or 453782 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 1445216045 is about 38015.9972248526. The cubic root of 1445216045 is about 1130.6050600953.

The spelling of 1445216045 in words is "one billion, four hundred forty-five million, two hundred sixteen thousand, forty-five".