1840207680 has 112 divisors (see below), whose sum is σ = 6491874240. Its totient is φ = 490719744.

The previous prime is 1840207669. The next prime is 1840207693. The reversal of 1840207680 is 867020481.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 97854 + ... + 115133.

Almost surely, 2^1840207680 is an apocalyptic number.

1840207680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1840207680 is an abundant number, since it is smaller than the sum of its proper divisors (4651666560).

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

1840207680 is a wasteful number, since it uses less digits than its factorization.

1840207680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213013 (or 212997 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1840207680 is about 42897.6418932323. The cubic root of 1840207680 is about 1225.4312362071.

The spelling of 1840207680 in words is "one billion, eight hundred forty million, two hundred seven thousand, six hundred eighty".