1881671 has 6 divisors (see below), whose sum is σ = 2068416. Its totient is φ = 1710500.

The previous prime is 1881641. The next prime is 1881697. The reversal of 1881671 is 1761881.

It is not a de Polignac number, because 1881671 - 2¹⁰ = 1880647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7655 + ... + 7896.

It is an arithmetic number, because the mean of its divisors is an integer number (344736).

2^1881671 is an apocalyptic number.

1881671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1881671 is a deficient number, since it is larger than the sum of its proper divisors (186745).

1881671 is a wasteful number, since it uses less digits than its factorization.

1881671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15573 (or 15562 counting only the distinct ones).

The product of its digits is 2688, while the sum is 32.

The square root of 1881671 is about 1371.7401357400. The cubic root of 1881671 is about 123.4566715189.

It can be divided in two parts, 1881 and 671, that added together give a palindrome (2552).

The spelling of 1881671 in words is "one million, eight hundred eighty-one thousand, six hundred seventy-one".