1445220379 has 4 divisors (see below), whose sum is σ = 1445333400. Its totient is φ = 1445107360.

The previous prime is 1445220353. The next prime is 1445220401. The reversal of 1445220379 is 9730225441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1445220379 - 2⁷ = 1445220251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445220349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34462 + ... + 63859.

It is an arithmetic number, because the mean of its divisors is an integer number (361333350).

Almost surely, 2^1445220379 is an apocalyptic number.

1445220379 is a deficient number, since it is larger than the sum of its proper divisors (113021).

1445220379 is an equidigital number, since it uses as much as digits as its factorization.

1445220379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113020.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1445220379 is about 38016.0542271288. The cubic root of 1445220379 is about 1130.6061902695.

The spelling of 1445220379 in words is "one billion, four hundred forty-five million, two hundred twenty thousand, three hundred seventy-nine".