1868503680 has 128 divisors (see below), whose sum is σ = 6617678400. Its totient is φ = 498263040.

The previous prime is 1868503667. The next prime is 1868503687. The reversal of 1868503680 is 863058681.

1868503680 is a `hidden beast` number, since 1 + 8 + 68 + 503 + 6 + 80 = 666.

1868503680 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is not an unprimeable number, because it can be changed into a prime (1868503687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36786 + ... + 71345.

Almost surely, 2^1868503680 is an apocalyptic number.

1868503680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1868503680 is an abundant number, since it is smaller than the sum of its proper divisors (4749174720).

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

1868503680 is a wasteful number, since it uses less digits than its factorization.

1868503680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108159 (or 108141 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 1868503680 is about 43226.1920599074. The cubic root of 1868503680 is about 1231.6802734724.

The spelling of 1868503680 in words is "one billion, eight hundred sixty-eight million, five hundred three thousand, six hundred eighty".