1890906 has 16 divisors (see below), whose sum is σ = 3828384. Its totient is φ = 622544.

The previous prime is 1890901. The next prime is 1890913. The reversal of 1890906 is 6090981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1890901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1401 + ... + 2396.

It is an arithmetic number, because the mean of its divisors is an integer number (239274).

2^1890906 is an apocalyptic number.

1890906 is an abundant number, since it is smaller than the sum of its proper divisors (1937478).

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

1890906 is a wasteful number, since it uses less digits than its factorization.

1890906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1890906 is about 1375.1021780217. The cubic root of 1890906 is about 123.6583118409.

The spelling of 1890906 in words is "one million, eight hundred ninety thousand, nine hundred six".