1670239057 has 2 divisors, whose sum is σ = 1670239058. Its totient is φ = 1670239056.

The previous prime is 1670239031. The next prime is 1670239147. The reversal of 1670239057 is 7509320761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1667578896 + 2660161 = 40836^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670239057 - 2¹⁵ = 1670206289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1670239007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835119528 + 835119529.

It is an arithmetic number, because the mean of its divisors is an integer number (835119529).

Almost surely, 2^1670239057 is an apocalyptic number.

It is an amenable number.

1670239057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670239057 is an equidigital number, since it uses as much as digits as its factorization.

1670239057 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 40.

The square root of 1670239057 is about 40868.5582936320. The cubic root of 1670239057 is about 1186.4776043939.

The spelling of 1670239057 in words is "one billion, six hundred seventy million, two hundred thirty-nine thousand, fifty-seven".