1851059540 has 48 divisors (see below), whose sum is σ = 4298736960. Its totient is φ = 663886080.

The previous prime is 1851059533. The next prime is 1851059557. The reversal of 1851059540 is 459501581.

It is a junction number, because it is equal to n+sod(n) for n = 1851059494 and 1851059503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41570 + ... + 73689.

It is an arithmetic number, because the mean of its divisors is an integer number (89557020).

Almost surely, 2^1851059540 is an apocalyptic number.

1851059540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1851059540 is an abundant number, since it is smaller than the sum of its proper divisors (2447677420).

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

1851059540 is a wasteful number, since it uses less digits than its factorization.

1851059540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115352 (or 115350 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 38.

The square root of 1851059540 is about 43023.9414744860. The cubic root of 1851059540 is about 1227.8353404548.

The spelling of 1851059540 in words is "one billion, eight hundred fifty-one million, fifty-nine thousand, five hundred forty".