1234567898 has 8 divisors (see below), whose sum is σ = 1882210260. Its totient is φ = 607164480.

The previous prime is 1234567891. The next prime is 1234567907. The reversal of 1234567898 is 8987654321.

1234567898 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 1175324089 + 59243809 = 34283^2 + 7697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1234567891) 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, 5059583 + ... + 5059826.

Almost surely, 2^1234567898 is an apocalyptic number.

1234567898 is a deficient number, since it is larger than the sum of its proper divisors (647642362).

1234567898 is a wasteful number, since it uses less digits than its factorization.

1234567898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10119472.

The product of its digits is 2903040, while the sum is 53.

The square root of 1234567898 is about 35136.4184002866. The cubic root of 1234567898 is about 1072.7659819583.

The spelling of 1234567898 in words is "one billion, two hundred thirty-four million, five hundred sixty-seven thousand, eight hundred ninety-eight".