1441021657 has 2 divisors, whose sum is σ = 1441021658. Its totient is φ = 1441021656.

The previous prime is 1441021601. The next prime is 1441021667. The reversal of 1441021657 is 7561201441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 977437696 + 463583961 = 31264^2 + 21531^2 .

It is a cyclic number.

It is not a de Polignac number, because 1441021657 - 2¹¹ = 1441019609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1441021667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720510828 + 720510829.

It is an arithmetic number, because the mean of its divisors is an integer number (720510829).

Almost surely, 2^1441021657 is an apocalyptic number.

It is an amenable number.

1441021657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1441021657 is an equidigital number, since it uses as much as digits as its factorization.

1441021657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1441021657 is about 37960.7910481328. The cubic root of 1441021657 is about 1129.5102315367.

The spelling of 1441021657 in words is "one billion, four hundred forty-one million, twenty-one thousand, six hundred fifty-seven".