1257344483 has 2 divisors, whose sum is σ = 1257344484. Its totient is φ = 1257344482.

The previous prime is 1257344461. The next prime is 1257344537. The reversal of 1257344483 is 3844437521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1257344483 - 2⁸ = 1257344227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1257344483.

It is not a weakly prime, because it can be changed into another prime (1257344783) 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, 628672241 + 628672242.

It is an arithmetic number, because the mean of its divisors is an integer number (628672242).

Almost surely, 2^1257344483 is an apocalyptic number.

1257344483 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257344483 is an equidigital number, since it uses as much as digits as its factorization.

1257344483 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 41.

The square root of 1257344483 is about 35459.0536111724. The cubic root of 1257344483 is about 1079.3229876172.

The spelling of 1257344483 in words is "one billion, two hundred fifty-seven million, three hundred forty-four thousand, four hundred eighty-three".