1859245040 has 80 divisors (see below), whose sum is σ = 4444778016. Its totient is φ = 722841600.

The previous prime is 1859245027. The next prime is 1859245049. The reversal of 1859245040 is 405429581.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1859244985 and 1859245003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1859245049) 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, 1025735 + ... + 1027545.

Almost surely, 2^1859245040 is an apocalyptic number.

1859245040 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 1859245040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2222389008).

1859245040 is an abundant number, since it is smaller than the sum of its proper divisors (2585532976).

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

1859245040 is a wasteful number, since it uses less digits than its factorization.

1859245040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178 (or 2172 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 1859245040 is about 43118.9638094424. The cubic root of 1859245040 is about 1229.6425338819.

The spelling of 1859245040 in words is "one billion, eight hundred fifty-nine million, two hundred forty-five thousand, forty".