1906164 has 36 divisors (see below), whose sum is σ = 5190276. Its totient is φ = 586368.

The previous prime is 1906153. The next prime is 1906183. The reversal of 1906164 is 4616091.

It can be written as a sum of positive squares in 2 ways, for example, as 242064 + 1664100 = 492^2 + 1290^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1906164² = 7266922389792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1569 + ... + 2504.

2^1906164 is an apocalyptic number.

It is an amenable number.

1906164 is an abundant number, since it is smaller than the sum of its proper divisors (3284112).

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

1906164 is a wasteful number, since it uses less digits than its factorization.

1906164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096 (or 4091 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1906164 is about 1380.6389825005. The cubic root of 1906164 is about 123.9900269468.

The spelling of 1906164 in words is "one million, nine hundred six thousand, one hundred sixty-four".