1660147793 has 2 divisors, whose sum is σ = 1660147794. Its totient is φ = 1660147792.

The previous prime is 1660147777. The next prime is 1660147799. The reversal of 1660147793 is 3977410661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1658688529 + 1459264 = 40727^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1660147793 - 2⁴ = 1660147777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1660147799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830073896 + 830073897.

It is an arithmetic number, because the mean of its divisors is an integer number (830073897).

Almost surely, 2^1660147793 is an apocalyptic number.

It is an amenable number.

1660147793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660147793 is an equidigital number, since it uses as much as digits as its factorization.

1660147793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 1660147793 is about 40744.9112528178. The cubic root of 1660147793 is about 1184.0832858631.

The spelling of 1660147793 in words is "one billion, six hundred sixty million, one hundred forty-seven thousand, seven hundred ninety-three".