1860055840 has 48 divisors (see below), whose sum is σ = 4406964408. Its totient is φ = 741892096.

The previous prime is 1860055819. The next prime is 1860055849. The reversal of 1860055840 is 485500681.

It can be written as a sum of positive squares in 4 ways, for example, as 921001104 + 939054736 = 30348^2 + 30644^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1860055840.

It is not an unprimeable number, because it can be changed into a prime (1860055849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40014 + ... + 72946.

Almost surely, 2^1860055840 is an apocalyptic number.

1860055840 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 1860055840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2203482204).

1860055840 is an abundant number, since it is smaller than the sum of its proper divisors (2546908568).

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

1860055840 is a wasteful number, since it uses less digits than its factorization.

1860055840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33301 (or 33293 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 1860055840 is about 43128.3646803354. The cubic root of 1860055840 is about 1229.8212532462.

The spelling of 1860055840 in words is "one billion, eight hundred sixty million, fifty-five thousand, eight hundred forty".