1445644241 has 4 divisors (see below), whose sum is σ = 1521730800. Its totient is φ = 1369557684.

The previous prime is 1445644217. The next prime is 1445644259. The reversal of 1445644241 is 1424465441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1445644241 - 2²⁶ = 1378535377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445644261) 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, 38043251 + ... + 38043288.

It is an arithmetic number, because the mean of its divisors is an integer number (380432700).

Almost surely, 2^1445644241 is an apocalyptic number.

It is an amenable number.

1445644241 is a deficient number, since it is larger than the sum of its proper divisors (76086559).

1445644241 is an equidigital number, since it uses as much as digits as its factorization.

1445644241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76086558.

The product of its digits is 61440, while the sum is 35.

The square root of 1445644241 is about 38021.6285947880. The cubic root of 1445644241 is about 1130.7167095522.

The spelling of 1445644241 in words is "one billion, four hundred forty-five million, six hundred forty-four thousand, two hundred forty-one".