1864086340 has 12 divisors (see below), whose sum is σ = 3914581356. Its totient is φ = 745634528.

The previous prime is 1864086337. The next prime is 1864086347. The reversal of 1864086340 is 436804681.

It can be written as a sum of positive squares in 2 ways, for example, as 191767104 + 1672319236 = 13848^2 + 40894^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1864086293 and 1864086302.

It is not an unprimeable number, because it can be changed into a prime (1864086347) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 46602139 + ... + 46602178.

It is an arithmetic number, because the mean of its divisors is an integer number (326215113).

Almost surely, 2^1864086340 is an apocalyptic number.

1864086340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1864086340 is an abundant number, since it is smaller than the sum of its proper divisors (2050495016).

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

1864086340 is a wasteful number, since it uses less digits than its factorization.

1864086340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93204326 (or 93204324 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 1864086340 is about 43175.0661840836. The cubic root of 1864086340 is about 1230.7089001858.

The spelling of 1864086340 in words is "one billion, eight hundred sixty-four million, eighty-six thousand, three hundred forty".