1670937245 has 4 divisors (see below), whose sum is σ = 2005124700. Its totient is φ = 1336749792.

The previous prime is 1670937241. The next prime is 1670937253. The reversal of 1670937245 is 5427390761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5427390761 = 13 ⋅417491597.

It can be written as a sum of positive squares in 2 ways, for example, as 450203524 + 1220733721 = 21218^2 + 34939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670937245 - 2² = 1670937241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1670937196 and 1670937205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670937241) by changing a digit.

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, 167093720 + ... + 167093729.

It is an arithmetic number, because the mean of its divisors is an integer number (501281175).

Almost surely, 2^1670937245 is an apocalyptic number.

It is an amenable number.

1670937245 is a deficient number, since it is larger than the sum of its proper divisors (334187455).

1670937245 is an equidigital number, since it uses as much as digits as its factorization.

1670937245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334187454.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 1670937245 is about 40877.0992733095. The cubic root of 1670937245 is about 1186.6429038905.

The spelling of 1670937245 in words is "one billion, six hundred seventy million, nine hundred thirty-seven thousand, two hundred forty-five".