1881330 has 32 divisors (see below), whose sum is σ = 4926528. Its totient is φ = 456000.

The previous prime is 1881329. The next prime is 1881343. The reversal of 1881330 is 331881.

It is a self number, because there is not a number n which added to its sum of digits gives 1881330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2521 + ... + 3180.

It is an arithmetic number, because the mean of its divisors is an integer number (153954).

2^1881330 is an apocalyptic number.

1881330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1881330 is an abundant number, since it is smaller than the sum of its proper divisors (3045198).

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

1881330 is a wasteful number, since it uses less digits than its factorization.

1881330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1881330 is about 1371.6158354291. The cubic root of 1881330 is about 123.4492133840.

It can be divided in two parts, 1881 and 330, that added together give a triangular number (2211 = T₆₆).

The spelling of 1881330 in words is "one million, eight hundred eighty-one thousand, three hundred thirty".