1670559379 has 2 divisors, whose sum is σ = 1670559380. Its totient is φ = 1670559378.

The previous prime is 1670559337. The next prime is 1670559427. The reversal of 1670559379 is 9739550761.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9739550761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1670559379 - 2¹³ = 1670551187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1670559679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835279689 + 835279690.

It is an arithmetic number, because the mean of its divisors is an integer number (835279690).

Almost surely, 2^1670559379 is an apocalyptic number.

1670559379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670559379 is an equidigital number, since it uses as much as digits as its factorization.

1670559379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1786050, while the sum is 52.

The square root of 1670559379 is about 40872.4770352862. The cubic root of 1670559379 is about 1186.5534479454.

The spelling of 1670559379 in words is "one billion, six hundred seventy million, five hundred fifty-nine thousand, three hundred seventy-nine".