1444601623 has 2 divisors, whose sum is σ = 1444601624. Its totient is φ = 1444601622.

The previous prime is 1444601593. The next prime is 1444601629. The reversal of 1444601623 is 3261064441.

It is a strong prime.

It is an emirp because it is prime and its reverse (3261064441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1444601623 - 2⁹ = 1444601111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444601629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722300811 + 722300812.

It is an arithmetic number, because the mean of its divisors is an integer number (722300812).

Almost surely, 2^1444601623 is an apocalyptic number.

1444601623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444601623 is an equidigital number, since it uses as much as digits as its factorization.

1444601623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1444601623 is about 38007.9152677439. The cubic root of 1444601623 is about 1130.4448148291. Note that the first 3 decimals are identical.

The spelling of 1444601623 in words is "one billion, four hundred forty-four million, six hundred one thousand, six hundred twenty-three".