1918027680 has 48 divisors (see below), whose sum is σ = 6041788704. Its totient is φ = 511473920.

The previous prime is 1918027679. The next prime is 1918027721. The reversal of 1918027680 is 867208191.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997466 + ... + 1998425.

It is an arithmetic number, because the mean of its divisors is an integer number (125870598).

Almost surely, 2^1918027680 is an apocalyptic number.

1918027680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1918027680 is an abundant number, since it is smaller than the sum of its proper divisors (4123761024).

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

1918027680 is a wasteful number, since it uses less digits than its factorization.

1918027680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3995909 (or 3995901 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 1918027680 is about 43795.2928977533. The cubic root of 1918027680 is about 1242.4672692912.

The spelling of 1918027680 in words is "one billion, nine hundred eighteen million, twenty-seven thousand, six hundred eighty".