1444361641 has 8 divisors (see below), whose sum is σ = 1497360384. Its totient is φ = 1391763360.

The previous prime is 1444361629. The next prime is 1444361647. The reversal of 1444361641 is 1461634441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444361641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1444361597 and 1444361606.

It is not an unprimeable number, because it can be changed into a prime (1444361647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92761 + ... + 107206.

It is an arithmetic number, because the mean of its divisors is an integer number (187170048).

Almost surely, 2^1444361641 is an apocalyptic number.

It is an amenable number.

1444361641 is a deficient number, since it is larger than the sum of its proper divisors (52998743).

1444361641 is a wasteful number, since it uses less digits than its factorization.

1444361641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200231.

The product of its digits is 27648, while the sum is 34.

The square root of 1444361641 is about 38004.7581363176. The cubic root of 1444361641 is about 1130.3822136185.

The spelling of 1444361641 in words is "one billion, four hundred forty-four million, three hundred sixty-one thousand, six hundred forty-one".