1868814028449 has 20 divisors (see below), whose sum is σ = 2792712215040. Its totient is φ = 1245417661080.

The previous prime is 1868814028447. The next prime is 1868814028451. The reversal of 1868814028449 is 9448204188681.

1868814028449 is a `hidden beast` number, since 1 + 86 + 88 + 14 + 0 + 28 + 449 = 666.

It is an interprime number because it is at equal distance from previous prime (1868814028447) and next prime (1868814028451).

It is not a de Polignac number, because 1868814028449 - 2¹ = 1868814028447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1868814028447) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4022457 + ... + 4462934.

It is an arithmetic number, because the mean of its divisors is an integer number (139635610752).

Almost surely, 2^{1868814028449} is an apocalyptic number.

It is an amenable number.

1868814028449 is a deficient number, since it is larger than the sum of its proper divisors (923898186591).

1868814028449 is an equidigital number, since it uses as much as digits as its factorization.

1868814028449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488122 (or 8488113 counting only the distinct ones).

The product of its (nonzero) digits is 28311552, while the sum is 63.

The spelling of 1868814028449 in words is "one trillion, eight hundred sixty-eight billion, eight hundred fourteen million, twenty-eight thousand, four hundred forty-nine".