1226989148 has 48 divisors (see below), whose sum is σ = 2703128064. Its totient is φ = 473394240.

The previous prime is 1226989139. The next prime is 1226989151. The reversal of 1226989148 is 8419896221.

It is a junction number, because it is equal to n+sod(n) for n = 1226989096 and 1226989105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12386 + ... + 51062.

It is an arithmetic number, because the mean of its divisors is an integer number (56315168).

Almost surely, 2^1226989148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226989148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351564032).

1226989148 is an abundant number, since it is smaller than the sum of its proper divisors (1476138916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226989148 is a wasteful number, since it uses less digits than its factorization.

1226989148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38802 (or 38800 counting only the distinct ones).

The product of its digits is 497664, while the sum is 50.

The square root of 1226989148 is about 35028.4048737592. The cubic root of 1226989148 is about 1070.5663138949.

The spelling of 1226989148 in words is "one billion, two hundred twenty-six million, nine hundred eighty-nine thousand, one hundred forty-eight".