1670109 has 16 divisors (see below), whose sum is σ = 2585088. Its totient is φ = 939312.

The previous prime is 1670093. The next prime is 1670129. The reversal of 1670109 is 9010761.

It is not a de Polignac number, because 1670109 - 2⁴ = 1670093 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (161568).

2^1670109 is an apocalyptic number.

It is an amenable number.

1670109 is a deficient number, since it is larger than the sum of its proper divisors (914979).

1670109 is a wasteful number, since it uses less digits than its factorization.

1670109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 1670109 is about 1292.3269710100. The cubic root of 1670109 is about 118.6446807660.

It can be divided in two parts, 16 and 70109, that added together give a triangular number (70125 = T₃₇₄).

The spelling of 1670109 in words is "one million, six hundred seventy thousand, one hundred nine".