1445441745 has 64 divisors (see below), whose sum is σ = 2697836544. Its totient is φ = 653061120.

The previous prime is 1445441687. The next prime is 1445441761. The reversal of 1445441745 is 5471445441.

It is not a de Polignac number, because 1445441745 - 2¹² = 1445437649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 286414 + ... + 291416.

It is an arithmetic number, because the mean of its divisors is an integer number (42153696).

Almost surely, 2^1445441745 is an apocalyptic number.

1445441745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1445441745 is a deficient number, since it is larger than the sum of its proper divisors (1252394799).

1445441745 is a wasteful number, since it uses less digits than its factorization.

1445441745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142.

The product of its digits is 179200, while the sum is 39.

The square root of 1445441745 is about 38018.9655961337. The cubic root of 1445441745 is about 1130.6639127216.

The spelling of 1445441745 in words is "one billion, four hundred forty-five million, four hundred forty-one thousand, seven hundred forty-five".