1228366148 has 6 divisors (see below), whose sum is σ = 2149640766. Its totient is φ = 614183072.

The previous prime is 1228366147. The next prime is 1228366157. The reversal of 1228366148 is 8416638221.

It can be written as a sum of positive squares in only one way, i.e., 1228362304 + 3844 = 35048^2 + 62^2 .

It is not an unprimeable number, because it can be changed into a prime (1228366147) 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 as a sum of consecutive naturals, namely, 153545765 + ... + 153545772.

It is an arithmetic number, because the mean of its divisors is an integer number (358273461).

Almost surely, 2^1228366148 is an apocalyptic number.

It is an amenable number.

1228366148 is a deficient number, since it is larger than the sum of its proper divisors (921274618).

1228366148 is a wasteful number, since it uses less digits than its factorization.

1228366148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307091541 (or 307091539 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 1228366148 is about 35048.0548390349. The cubic root of 1228366148 is about 1070.9666485116.

The spelling of 1228366148 in words is "one billion, two hundred twenty-eight million, three hundred sixty-six thousand, one hundred forty-eight".