1860874440 has 128 divisors (see below), whose sum is σ = 5894553600. Its totient is φ = 468668160.

The previous prime is 1860874439. The next prime is 1860874441. The reversal of 1860874440 is 444780681.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1860874439) and next prime (1860874441).

It is a junction number, because it is equal to n+sod(n) for n = 1860874392 and 1860874401.

It is not an unprimeable number, because it can be changed into a prime (1860874441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 872175 + ... + 874305.

It is an arithmetic number, because the mean of its divisors is an integer number (46051200).

Almost surely, 2^1860874440 is an apocalyptic number.

1860874440 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 1860874440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2947276800).

1860874440 is an abundant number, since it is smaller than the sum of its proper divisors (4033679160).

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

1860874440 is a wasteful number, since it uses less digits than its factorization.

1860874440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547 (or 2543 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 1860874440 is about 43137.8539104578. The cubic root of 1860874440 is about 1230.0016392337.

The spelling of 1860874440 in words is "one billion, eight hundred sixty million, eight hundred seventy-four thousand, four hundred forty".