1662330139 has 2 divisors, whose sum is σ = 1662330140. Its totient is φ = 1662330138.

The previous prime is 1662330119. The next prime is 1662330179. The reversal of 1662330139 is 9310332661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1662330139 - 2⁷ = 1662330011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1662330119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831165069 + 831165070.

It is an arithmetic number, because the mean of its divisors is an integer number (831165070).

Almost surely, 2^1662330139 is an apocalyptic number.

1662330139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662330139 is an equidigital number, since it uses as much as digits as its factorization.

1662330139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 1662330139 is about 40771.6830533153. The cubic root of 1662330139 is about 1184.6019039363.

The spelling of 1662330139 in words is "one billion, six hundred sixty-two million, three hundred thirty thousand, one hundred thirty-nine".