1098358603 has 4 divisors (see below), whose sum is σ = 1098644920. Its totient is φ = 1098072288.

The previous prime is 1098358577. The next prime is 1098358607. The reversal of 1098358603 is 3068538901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3068538901 = 1531 ⋅2004271.

It is a cyclic number.

It is not a de Polignac number, because 1098358603 - 2²⁵ = 1064804171 is a prime.

It is a super-2 number, since 2×1098358603² = 2412783241568223218, which contains 22 as substring.

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 1098358603.

It is not an unprimeable number, because it can be changed into a prime (1098358607) 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, 137325 + ... + 145102.

It is an arithmetic number, because the mean of its divisors is an integer number (274661230).

Almost surely, 2^1098358603 is an apocalyptic number.

1098358603 is a deficient number, since it is larger than the sum of its proper divisors (286317).

1098358603 is an equidigital number, since it uses as much as digits as its factorization.

1098358603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286316.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 1098358603 is about 33141.4936748482. The cubic root of 1098358603 is about 1031.7664109238.

The spelling of 1098358603 in words is "one billion, ninety-eight million, three hundred fifty-eight thousand, six hundred three".