1098213443 has 4 divisors (see below), whose sum is σ = 1100822448. Its totient is φ = 1095604440.

The previous prime is 1098213427. The next prime is 1098213449. The reversal of 1098213443 is 3443128901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3443128901 = 647 ⋅5321683.

It is a cyclic number.

It is not a de Polignac number, because 1098213443 - 2⁴ = 1098213427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098213449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303871 + ... + 1304712.

It is an arithmetic number, because the mean of its divisors is an integer number (275205612).

Almost surely, 2^1098213443 is an apocalyptic number.

1098213443 is a deficient number, since it is larger than the sum of its proper divisors (2609005).

1098213443 is an equidigital number, since it uses as much as digits as its factorization.

1098213443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609004.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1098213443 is about 33139.3035985972. The cubic root of 1098213443 is about 1031.7209558814.

The spelling of 1098213443 in words is "one billion, ninety-eight million, two hundred thirteen thousand, four hundred forty-three".