1945080 has 64 divisors (see below), whose sum is σ = 6487200. Its totient is φ = 518400.

The previous prime is 1945061. The next prime is 1945091. The reversal of 1945080 is 805491.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 180 + ... + 1980.

2^1945080 is an apocalyptic number.

1945080 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 1945080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3243600).

1945080 is an abundant number, since it is smaller than the sum of its proper divisors (4542120).

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

1945080 is a wasteful number, since it uses less digits than its factorization.

1945080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1945080 is about 1394.6612491928. The cubic root of 1945080 is about 124.8281371469.

The spelling of 1945080 in words is "one million, nine hundred forty-five thousand, eighty".