1466144257 has 2 divisors, whose sum is σ = 1466144258. Its totient is φ = 1466144256.

The previous prime is 1466144237. The next prime is 1466144279. The reversal of 1466144257 is 7524416641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1250612496 + 215531761 = 35364^2 + 14681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1466144257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1466144237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 733072128 + 733072129.

It is an arithmetic number, because the mean of its divisors is an integer number (733072129).

Almost surely, 2^1466144257 is an apocalyptic number.

It is an amenable number.

1466144257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1466144257 is an equidigital number, since it uses as much as digits as its factorization.

1466144257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The square root of 1466144257 is about 38290.2632140339. The cubic root of 1466144257 is about 1136.0363675394.

The spelling of 1466144257 in words is "one billion, four hundred sixty-six million, one hundred forty-four thousand, two hundred fifty-seven".