1998298067 has 8 divisors (see below), whose sum is σ = 2021021856. Its totient is φ = 1975617792.

The previous prime is 1998298019. The next prime is 1998298111. The reversal of 1998298067 is 7608928991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1998298067 - 2¹⁴ = 1998281683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1998297997 and 1998298015.

It is not an unprimeable number, because it can be changed into a prime (1998298007) 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, 86378 + ... + 107040.

It is an arithmetic number, because the mean of its divisors is an integer number (252627732).

Almost surely, 2^1998298067 is an apocalyptic number.

1998298067 is a deficient number, since it is larger than the sum of its proper divisors (22723789).

1998298067 is an equidigital number, since it uses as much as digits as its factorization.

1998298067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21757.

The product of its (nonzero) digits is 3919104, while the sum is 59.

The square root of 1998298067 is about 44702.3273107788. The cubic root of 1998298067 is about 1259.5635649377.

The spelling of 1998298067 in words is "one billion, nine hundred ninety-eight million, two hundred ninety-eight thousand, sixty-seven".