1659354457 has 2 divisors, whose sum is σ = 1659354458. Its totient is φ = 1659354456.

The previous prime is 1659354449. The next prime is 1659354461. The reversal of 1659354457 is 7544539561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 878766736 + 780587721 = 29644^2 + 27939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1659354457 - 2³ = 1659354449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1659354457.

It is not a weakly prime, because it can be changed into another prime (1659354427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829677228 + 829677229.

It is an arithmetic number, because the mean of its divisors is an integer number (829677229).

Almost surely, 2^1659354457 is an apocalyptic number.

It is an amenable number.

1659354457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1659354457 is an equidigital number, since it uses as much as digits as its factorization.

1659354457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268000, while the sum is 49.

The square root of 1659354457 is about 40735.1746896954. The cubic root of 1659354457 is about 1183.8946429052.

The spelling of 1659354457 in words is "one billion, six hundred fifty-nine million, three hundred fifty-four thousand, four hundred fifty-seven".