1883640 has 64 divisors (see below), whose sum is σ = 6168960. Its totient is φ = 456320.

The previous prime is 1883639. The next prime is 1883647. The reversal of 1883640 is 463881.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1883598 and 1883607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1883647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607 + ... + 2033.

It is an arithmetic number, because the mean of its divisors is an integer number (96390).

2^1883640 is an apocalyptic number.

1883640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1883640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3084480).

1883640 is an abundant number, since it is smaller than the sum of its proper divisors (4285320).

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

1883640 is a wasteful number, since it uses less digits than its factorization.

1883640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1883640 is about 1372.4576496198. The cubic root of 1883640 is about 123.4997186201.

It can be divided in two parts, 188 and 3640, that added together give a triangular number (3828 = T₈₇).

The spelling of 1883640 in words is "one million, eight hundred eighty-three thousand, six hundred forty".