1445132409 has 16 divisors (see below), whose sum is σ = 2215621632. Its totient is φ = 820721808.

The previous prime is 1445132401. The next prime is 1445132441. The reversal of 1445132409 is 9042315441.

It is not a de Polignac number, because 1445132409 - 2³ = 1445132401 is a prime.

It is a super-4 number, since 4×1445132409⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1445132409.

It is not an unprimeable number, because it can be changed into a prime (1445132401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207669 + ... + 214514.

It is an arithmetic number, because the mean of its divisors is an integer number (138476352).

Almost surely, 2^1445132409 is an apocalyptic number.

It is an amenable number.

1445132409 is a deficient number, since it is larger than the sum of its proper divisors (770489223).

1445132409 is a wasteful number, since it uses less digits than its factorization.

1445132409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422356.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1445132409 is about 38014.8971983353. The cubic root of 1445132409 is about 1130.5832499516.

The spelling of 1445132409 in words is "one billion, four hundred forty-five million, one hundred thirty-two thousand, four hundred nine".