1670438533 has 2 divisors, whose sum is σ = 1670438534. Its totient is φ = 1670438532.

The previous prime is 1670438527. The next prime is 1670438537. The reversal of 1670438533 is 3358340761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1667333889 + 3104644 = 40833^2 + 1762^2 .

It is an emirp because it is prime and its reverse (3358340761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1670438533 - 2²⁵ = 1636884101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1670438537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835219266 + 835219267.

It is an arithmetic number, because the mean of its divisors is an integer number (835219267).

Almost surely, 2^1670438533 is an apocalyptic number.

It is an amenable number.

1670438533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670438533 is an equidigital number, since it uses as much as digits as its factorization.

1670438533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 1670438533 is about 40870.9986787698. The cubic root of 1670438533 is about 1186.5248360330.

The spelling of 1670438533 in words is "one billion, six hundred seventy million, four hundred thirty-eight thousand, five hundred thirty-three".