1098343889 has 4 divisors (see below), whose sum is σ = 1099410240. Its totient is φ = 1097277540.

The previous prime is 1098343877. The next prime is 1098343949. The reversal of 1098343889 is 9883438901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9883438901 = 7 ⋅1411919843.

It is a cyclic number.

It is not a de Polignac number, because 1098343889 - 2¹² = 1098339793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1098343889.

It is not an unprimeable number, because it can be changed into a prime (9098343889) 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, 531629 + ... + 533690.

It is an arithmetic number, because the mean of its divisors is an integer number (274852560).

Almost surely, 2^1098343889 is an apocalyptic number.

It is an amenable number.

1098343889 is a deficient number, since it is larger than the sum of its proper divisors (1066351).

1098343889 is a wasteful number, since it uses less digits than its factorization.

1098343889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066350.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 1098343889 is about 33141.2716865240. The cubic root of 1098343889 is about 1031.7618036007.

It can be divided in two parts, 10983 and 43889, that added together give a cube (54872 = 38³).

The spelling of 1098343889 in words is "one billion, ninety-eight million, three hundred forty-three thousand, eight hundred eighty-nine".