1445449057 has 6 divisors (see below), whose sum is σ = 1565190582. Its totient is φ = 1334260512.

The previous prime is 1445449043. The next prime is 1445449069. The reversal of 1445449057 is 7509445441.

It can be written as a sum of positive squares in 3 ways, for example, as 3272481 + 1442176576 = 1809^2 + 37976^2 .

It is not a de Polignac number, because 1445449057 - 2¹⁹ = 1444924769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445449457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4276308 + ... + 4276645.

It is an arithmetic number, because the mean of its divisors is an integer number (260865097).

Almost surely, 2^1445449057 is an apocalyptic number.

It is an amenable number.

1445449057 is a deficient number, since it is larger than the sum of its proper divisors (119741525).

1445449057 is an equidigital number, since it uses as much as digits as its factorization.

1445449057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8552979 (or 8552966 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 1445449057 is about 38019.0617585442. The cubic root of 1445449057 is about 1130.6658192670.

The spelling of 1445449057 in words is "one billion, four hundred forty-five million, four hundred forty-nine thousand, fifty-seven".