1441163257 has 2 divisors, whose sum is σ = 1441163258. Its totient is φ = 1441163256.

The previous prime is 1441163249. The next prime is 1441163261. The reversal of 1441163257 is 7523611441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1286011321 + 155151936 = 35861^2 + 12456^2 .

It is an emirp because it is prime and its reverse (7523611441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1441163257 - 2³ = 1441163249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1441160257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720581628 + 720581629.

It is an arithmetic number, because the mean of its divisors is an integer number (720581629).

Almost surely, 2^1441163257 is an apocalyptic number.

It is an amenable number.

1441163257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1441163257 is an equidigital number, since it uses as much as digits as its factorization.

1441163257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 1441163257 is about 37962.6560846314. The cubic root of 1441163257 is about 1129.5472269118.

Adding to 1441163257 its reverse (7523611441), we get a palindrome (8964774698).

The spelling of 1441163257 in words is "one billion, four hundred forty-one million, one hundred sixty-three thousand, two hundred fifty-seven".