1868404000 has 48 divisors (see below), whose sum is σ = 4590678456. Its totient is φ = 747360000.

The previous prime is 1868403997. The next prime is 1868404003. The reversal of 1868404000 is 4048681.

It is an interprime number because it is at equal distance from previous prime (1868403997) and next prime (1868404003).

It can be written as a sum of positive squares in 4 ways, for example, as 645363216 + 1223040784 = 25404^2 + 34972^2 .

It is not an unprimeable number, because it can be changed into a prime (1868404003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229551 + ... + 237550.

Almost surely, 2^1868404000 is an apocalyptic number.

1868404000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1868404000 is an abundant number, since it is smaller than the sum of its proper divisors (2722274456).

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

1868404000 is an equidigital number, since it uses as much as digits as its factorization.

1868404000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467126 (or 467108 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 1868404000 is about 43225.0390398898. The cubic root of 1868404000 is about 1231.6583707285.

The spelling of 1868404000 in words is "one billion, eight hundred sixty-eight million, four hundred four thousand".