1406330641 has 2 divisors, whose sum is σ = 1406330642. Its totient is φ = 1406330640.

The previous prime is 1406330617. The next prime is 1406330647. The reversal of 1406330641 is 1460336041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 845588241 + 560742400 = 29079^2 + 23680^2 .

It is an emirp because it is prime and its reverse (1460336041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1406330641 - 2²³ = 1397942033 is a prime.

It is not a weakly prime, because it can be changed into another prime (1406330647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703165320 + 703165321.

It is an arithmetic number, because the mean of its divisors is an integer number (703165321).

Almost surely, 2^1406330641 is an apocalyptic number.

It is an amenable number.

1406330641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406330641 is an equidigital number, since it uses as much as digits as its factorization.

1406330641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1406330641 is about 37501.0751979193. The cubic root of 1406330641 is about 1120.3726016350.

Adding to 1406330641 its reverse (1460336041), we get a palindrome (2866666682).

The spelling of 1406330641 in words is "one billion, four hundred six million, three hundred thirty thousand, six hundred forty-one".