1870164 has 18 divisors (see below), whose sum is σ = 4727450. Its totient is φ = 623376.

The previous prime is 1870163. The next prime is 1870207. The reversal of 1870164 is 4610781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 501264 = 1170^2 + 708^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1870163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25939 + ... + 26010.

2^1870164 is an apocalyptic number.

It is an amenable number.

1870164 is an abundant number, since it is smaller than the sum of its proper divisors (2857286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1870164 is a wasteful number, since it uses less digits than its factorization.

1870164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51959 (or 51954 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1870164 is about 1367.5393961418. The cubic root of 1870164 is about 123.2044982054.

The spelling of 1870164 in words is "one million, eight hundred seventy thousand, one hundred sixty-four".