1670368345 has 4 divisors (see below), whose sum is σ = 2004442020. Its totient is φ = 1336294672.

The previous prime is 1670368339. The next prime is 1670368363. The reversal of 1670368345 is 5438630761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 507285529 + 1163082816 = 22523^2 + 34104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670368345 - 2⁵ = 1670368313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167036830 + ... + 167036839.

It is an arithmetic number, because the mean of its divisors is an integer number (501110505).

Almost surely, 2^1670368345 is an apocalyptic number.

It is an amenable number.

1670368345 is a deficient number, since it is larger than the sum of its proper divisors (334073675).

1670368345 is an equidigital number, since it uses as much as digits as its factorization.

1670368345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334073674.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 1670368345 is about 40870.1400168876. The cubic root of 1670368345 is about 1186.5082174486.

The spelling of 1670368345 in words is "one billion, six hundred seventy million, three hundred sixty-eight thousand, three hundred forty-five".