1827098640 has 80 divisors (see below), whose sum is σ = 6293347200. Its totient is φ = 487225728.

The previous prime is 1827098639. The next prime is 1827098743. The reversal of 1827098640 is 468907281.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420780 + ... + 425099.

It is an arithmetic number, because the mean of its divisors is an integer number (78666840).

Almost surely, 2^1827098640 is an apocalyptic number.

1827098640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1827098640 is an abundant number, since it is smaller than the sum of its proper divisors (4466248560).

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

1827098640 is a wasteful number, since it uses less digits than its factorization.

1827098640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845901 (or 845889 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1827098640 is about 42744.5743925472. The cubic root of 1827098640 is about 1222.5144414719.

The spelling of 1827098640 in words is "one billion, eight hundred twenty-seven million, ninety-eight thousand, six hundred forty".