1344468857 has 2 divisors, whose sum is σ = 1344468858. Its totient is φ = 1344468856.

The previous prime is 1344468809. The next prime is 1344468871. The reversal of 1344468857 is 7588644431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1344248896 + 219961 = 36664^2 + 469^2 .

It is an emirp because it is prime and its reverse (7588644431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1344468857 - 2¹⁶ = 1344403321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1344468877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672234428 + 672234429.

It is an arithmetic number, because the mean of its divisors is an integer number (672234429).

Almost surely, 2^1344468857 is an apocalyptic number.

It is an amenable number.

1344468857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344468857 is an equidigital number, since it uses as much as digits as its factorization.

1344468857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 50.

The square root of 1344468857 is about 36666.9995636403. Note that the first 3 decimals coincide. The cubic root of 1344468857 is about 1103.6979831044.

The spelling of 1344468857 in words is "one billion, three hundred forty-four million, four hundred sixty-eight thousand, eight hundred fifty-seven".