1670321045 has 8 divisors (see below), whose sum is σ = 2006676024. Its totient is φ = 1334729664.

The previous prime is 1670321041. The next prime is 1670321053. The reversal of 1670321045 is 5401230761.

It can be written as a sum of positive squares in 4 ways, for example, as 176730436 + 1493590609 = 13294^2 + 38647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1670321045 - 2² = 1670321041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1670320999 and 1670321017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670321041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186074 + ... + 194843.

It is an arithmetic number, because the mean of its divisors is an integer number (250834503).

Almost surely, 2^1670321045 is an apocalyptic number.

It is an amenable number.

1670321045 is a deficient number, since it is larger than the sum of its proper divisors (336354979).

1670321045 is an equidigital number, since it uses as much as digits as its factorization.

1670321045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381799.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1670321045 is about 40869.5613507167. The cubic root of 1670321045 is about 1186.4970178493.

The spelling of 1670321045 in words is "one billion, six hundred seventy million, three hundred twenty-one thousand, forty-five".