1881353 has 4 divisors (see below), whose sum is σ = 1888068. Its totient is φ = 1874640.

The previous prime is 1881349. The next prime is 1881389. The reversal of 1881353 is 3531881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3531881 = 29 ⋅121789.

It can be written as a sum of positive squares in 2 ways, for example, as 1236544 + 644809 = 1112^2 + 803^2 .

It is a cyclic number.

It is not a de Polignac number, because 1881353 - 2² = 1881349 is a prime.

It is a super-2 number, since 2×1881353² = 7078978221218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1881343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2918 + ... + 3503.

It is an arithmetic number, because the mean of its divisors is an integer number (472017).

2^1881353 is an apocalyptic number.

It is an amenable number.

1881353 is a deficient number, since it is larger than the sum of its proper divisors (6715).

1881353 is an equidigital number, since it uses as much as digits as its factorization.

1881353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6714.

The product of its digits is 2880, while the sum is 29.

The square root of 1881353 is about 1371.6242196753. The cubic root of 1881353 is about 123.4497164537.

The spelling of 1881353 in words is "one million, eight hundred eighty-one thousand, three hundred fifty-three".