1998343354 has 16 divisors (see below), whose sum is σ = 3606033600. Its totient is φ = 811357344.

The previous prime is 1998343331. The next prime is 1998343357. The reversal of 1998343354 is 4533438991.

It is a junction number, because it is equal to n+sod(n) for n = 1998343298 and 1998343307.

It is not an unprimeable number, because it can be changed into a prime (1998343357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3756019 + ... + 3756550.

It is an arithmetic number, because the mean of its divisors is an integer number (225377100).

Almost surely, 2^1998343354 is an apocalyptic number.

1998343354 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1998343354 is a deficient number, since it is larger than the sum of its proper divisors (1607690246).

1998343354 is a wasteful number, since it uses less digits than its factorization.

1998343354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7512597.

The product of its digits is 1399680, while the sum is 49.

The square root of 1998343354 is about 44702.8338475314. The cubic root of 1998343354 is about 1259.5730799387.

The spelling of 1998343354 in words is "one billion, nine hundred ninety-eight million, three hundred forty-three thousand, three hundred fifty-four".