1909164 has 12 divisors (see below), whose sum is σ = 4454744. Its totient is φ = 636384.

The previous prime is 1909153. The next prime is 1909183. The reversal of 1909164 is 4619091.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79537 + ... + 79560.

2^1909164 is an apocalyptic number.

It is an amenable number.

1909164 is an abundant number, since it is smaller than the sum of its proper divisors (2545580).

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

1909164 is a wasteful number, since it uses less digits than its factorization.

1909164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159104 (or 159102 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1909164 is about 1381.7250088205. The cubic root of 1909164 is about 124.0550397352.

The spelling of 1909164 in words is "one million, nine hundred nine thousand, one hundred sixty-four".