1466398561 has 2 divisors, whose sum is σ = 1466398562. Its totient is φ = 1466398560.

The previous prime is 1466398519. The next prime is 1466398573. The reversal of 1466398561 is 1658936641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 901860961 + 564537600 = 30031^2 + 23760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1466398561 - 2¹⁹ = 1465874273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1466398061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 733199280 + 733199281.

It is an arithmetic number, because the mean of its divisors is an integer number (733199281).

Almost surely, 2^1466398561 is an apocalyptic number.

It is an amenable number.

1466398561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1466398561 is an equidigital number, since it uses as much as digits as its factorization.

1466398561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The square root of 1466398561 is about 38293.5838098238. The cubic root of 1466398561 is about 1136.1020459085.

The spelling of 1466398561 in words is "one billion, four hundred sixty-six million, three hundred ninety-eight thousand, five hundred sixty-one".