1428458657 has 2 divisors, whose sum is σ = 1428458658. Its totient is φ = 1428458656.

The previous prime is 1428458621. The next prime is 1428458699. The reversal of 1428458657 is 7568548241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1012257856 + 416200801 = 31816^2 + 20401^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428458657 - 2¹⁰ = 1428457633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1428451657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714229328 + 714229329.

It is an arithmetic number, because the mean of its divisors is an integer number (714229329).

Almost surely, 2^1428458657 is an apocalyptic number.

It is an amenable number.

1428458657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428458657 is an equidigital number, since it uses as much as digits as its factorization.

1428458657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2150400, while the sum is 50.

The square root of 1428458657 is about 37794.9554438155. The cubic root of 1428458657 is about 1126.2182442903.

The spelling of 1428458657 in words is "one billion, four hundred twenty-eight million, four hundred fifty-eight thousand, six hundred fifty-seven".