1660337057 has 2 divisors, whose sum is σ = 1660337058. Its totient is φ = 1660337056.

The previous prime is 1660337033. The next prime is 1660337093. The reversal of 1660337057 is 7507330661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 835441216 + 824895841 = 28904^2 + 28721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1660337057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1660337057.

It is not a weakly prime, because it can be changed into another prime (1660337017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830168528 + 830168529.

It is an arithmetic number, because the mean of its divisors is an integer number (830168529).

Almost surely, 2^1660337057 is an apocalyptic number.

It is an amenable number.

1660337057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660337057 is an equidigital number, since it uses as much as digits as its factorization.

1660337057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 1660337057 is about 40747.2337343285. The cubic root of 1660337057 is about 1184.1282810184.

The spelling of 1660337057 in words is "one billion, six hundred sixty million, three hundred thirty-seven thousand, fifty-seven".