1098662843 has 4 divisors (see below), whose sum is σ = 1098732648. Its totient is φ = 1098593040.

The previous prime is 1098662801. The next prime is 1098662891. The reversal of 1098662843 is 3482668901.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3482668901 = 23 ⋅151420387.

It is a cyclic number.

It is not a de Polignac number, because 1098662843 - 2⁶ = 1098662779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098662743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055 + ... + 46887.

It is an arithmetic number, because the mean of its divisors is an integer number (274683162).

Almost surely, 2^1098662843 is an apocalyptic number.

1098662843 is a deficient number, since it is larger than the sum of its proper divisors (69805).

1098662843 is an equidigital number, since it uses as much as digits as its factorization.

1098662843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69804.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 1098662843 is about 33146.0833734545. The cubic root of 1098662843 is about 1031.8616668912.

The spelling of 1098662843 in words is "one billion, ninety-eight million, six hundred sixty-two thousand, eight hundred forty-three".