1670945627 has 4 divisors (see below), whose sum is σ = 1799479920. Its totient is φ = 1542411336.

The previous prime is 1670945599. The next prime is 1670945651. The reversal of 1670945627 is 7265490761.

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

It is a cyclic number.

It is not a de Polignac number, because 1670945627 - 2¹⁴ = 1670929243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670945677) 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, 64267127 + ... + 64267152.

It is an arithmetic number, because the mean of its divisors is an integer number (449869980).

Almost surely, 2^1670945627 is an apocalyptic number.

1670945627 is a deficient number, since it is larger than the sum of its proper divisors (128534293).

1670945627 is a wasteful number, since it uses less digits than its factorization.

1670945627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128534292.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 1670945627 is about 40877.2018000254. The cubic root of 1670945627 is about 1186.6448880912.

The spelling of 1670945627 in words is "one billion, six hundred seventy million, nine hundred forty-five thousand, six hundred twenty-seven".