1445444656 has 30 divisors (see below), whose sum is σ = 2867251380. Its totient is φ = 705900384.

The previous prime is 1445444647. The next prime is 1445444687. The reversal of 1445444656 is 6564445441.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5155 + ... + 54013.

It is an arithmetic number, because the mean of its divisors is an integer number (95575046).

Almost surely, 2^1445444656 is an apocalyptic number.

1445444656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1445444656 is a deficient number, since it is larger than the sum of its proper divisors (1421806724).

1445444656 is an equidigital number, since it uses as much as digits as its factorization.

1445444656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48953 (or 48904 counting only the distinct ones).

The product of its digits is 921600, while the sum is 43.

The square root of 1445444656 is about 38019.0038796389. The cubic root of 1445444656 is about 1130.6646717423.

The spelling of 1445444656 in words is "one billion, four hundred forty-five million, four hundred forty-four thousand, six hundred fifty-six".