1881193 has 8 divisors (see below), whose sum is σ = 1987200. Its totient is φ = 1777248.

The previous prime is 1881181. The next prime is 1881197. The reversal of 1881193 is 3911881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1881193 - 2⁵ = 1881161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1881197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1588 + ... + 2506.

It is an arithmetic number, because the mean of its divisors is an integer number (248400).

2^1881193 is an apocalyptic number.

It is an amenable number.

1881193 is a deficient number, since it is larger than the sum of its proper divisors (106007).

1881193 is an equidigital number, since it uses as much as digits as its factorization.

1881193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its digits is 1728, while the sum is 31.

The square root of 1881193 is about 1371.5658934226. The cubic root of 1881193 is about 123.4462167534.

The spelling of 1881193 in words is "one million, eight hundred eighty-one thousand, one hundred ninety-three".