1490271457 has 2 divisors, whose sum is σ = 1490271458. Its totient is φ = 1490271456.

The previous prime is 1490271451. The next prime is 1490271487. The reversal of 1490271457 is 7541720941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1490037201 + 234256 = 38601^2 + 484^2 .

It is an emirp because it is prime and its reverse (7541720941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1490271457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1490271451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745135728 + 745135729.

It is an arithmetic number, because the mean of its divisors is an integer number (745135729).

Almost surely, 2^1490271457 is an apocalyptic number.

It is an amenable number.

1490271457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490271457 is an equidigital number, since it uses as much as digits as its factorization.

1490271457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 1490271457 is about 38604.0342062847. The cubic root of 1490271457 is about 1142.2341170807.

The spelling of 1490271457 in words is "one billion, four hundred ninety million, two hundred seventy-one thousand, four hundred fifty-seven".