1881395 has 8 divisors (see below), whose sum is σ = 2266704. Its totient is φ = 1499104.

The previous prime is 1881391. The next prime is 1881401. The reversal of 1881395 is 5931881.

1881395 = T₈₆₅ + T₈₆₆ + ... + T₈₆₉.

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 1881395 - 2² = 1881391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1881391) 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, 992 + ... + 2178.

It is an arithmetic number, because the mean of its divisors is an integer number (283338).

2^1881395 is an apocalyptic number.

1881395 is a deficient number, since it is larger than the sum of its proper divisors (385309).

1881395 is a wasteful number, since it uses less digits than its factorization.

1881395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509.

The product of its digits is 8640, while the sum is 35.

The square root of 1881395 is about 1371.6395299057. The cubic root of 1881395 is about 123.4506350921.

The spelling of 1881395 in words is "one million, eight hundred eighty-one thousand, three hundred ninety-five".