1226478898 has 8 divisors (see below), whose sum is σ = 1852065900. Its totient is φ = 609123600.

The previous prime is 1226478893. The next prime is 1226478907. The reversal of 1226478898 is 8988746221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1208049049 + 18429849 = 34757^2 + 4293^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1226478893) 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, 2057553 + ... + 2058148.

Almost surely, 2^1226478898 is an apocalyptic number.

1226478898 is a deficient number, since it is larger than the sum of its proper divisors (625587002).

1226478898 is a wasteful number, since it uses less digits than its factorization.

1226478898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115852.

The product of its digits is 3096576, while the sum is 55.

The square root of 1226478898 is about 35021.1207416325. The cubic root of 1226478898 is about 1070.4178930765.

The spelling of 1226478898 in words is "one billion, two hundred twenty-six million, four hundred seventy-eight thousand, eight hundred ninety-eight".