1891056 has 20 divisors (see below), whose sum is σ = 4885352. Its totient is φ = 630336.

The previous prime is 1891049. The next prime is 1891069. The reversal of 1891056 is 6501981.

It is a happy number.

It is a congruent number.

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, 19651 + ... + 19746.

2^1891056 is an apocalyptic number.

1891056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1891056 is an abundant number, since it is smaller than the sum of its proper divisors (2994296).

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

1891056 is a wasteful number, since it uses less digits than its factorization.

1891056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39408 (or 39402 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 1891056 is about 1375.1567183416. The cubic root of 1891056 is about 123.6615815709.

The spelling of 1891056 in words is "one million, eight hundred ninety-one thousand, fifty-six".