1859343140 has 12 divisors (see below), whose sum is σ = 3904620636. Its totient is φ = 743737248.

The previous prime is 1859343139. The next prime is 1859343151. The reversal of 1859343140 is 413439581.

It can be written as a sum of positive squares in 2 ways, for example, as 209033764 + 1650309376 = 14458^2 + 40624^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1859343094 and 1859343103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46483559 + ... + 46483598.

It is an arithmetic number, because the mean of its divisors is an integer number (325385053).

Almost surely, 2^1859343140 is an apocalyptic number.

1859343140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1859343140 is an abundant number, since it is smaller than the sum of its proper divisors (2045277496).

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

1859343140 is a wasteful number, since it uses less digits than its factorization.

1859343140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92967166 (or 92967164 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1859343140 is about 43120.1013449644. The cubic root of 1859343140 is about 1229.6641601888.

The spelling of 1859343140 in words is "one billion, eight hundred fifty-nine million, three hundred forty-three thousand, one hundred forty".