1853868340 has 12 divisors (see below), whose sum is σ = 3893123556. Its totient is φ = 741547328.

The previous prime is 1853868337. The next prime is 1853868371. The reversal of 1853868340 is 438683581.

It can be written as a sum of positive squares in 2 ways, for example, as 305131024 + 1548737316 = 17468^2 + 39354^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46346689 + ... + 46346728.

It is an arithmetic number, because the mean of its divisors is an integer number (324426963).

Almost surely, 2^1853868340 is an apocalyptic number.

1853868340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1853868340 is an abundant number, since it is smaller than the sum of its proper divisors (2039255216).

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

1853868340 is a wasteful number, since it uses less digits than its factorization.

1853868340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92693426 (or 92693424 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 1853868340 is about 43056.5713916006. The cubic root of 1853868340 is about 1228.4560662108.

The spelling of 1853868340 in words is "one billion, eight hundred fifty-three million, eight hundred sixty-eight thousand, three hundred forty".