1228451116 has 6 divisors (see below), whose sum is σ = 2149789460. Its totient is φ = 614225556.

The previous prime is 1228451111. The next prime is 1228451117. The reversal of 1228451116 is 6111548221.

It is not an unprimeable number, because it can be changed into a prime (1228451111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153556386 + ... + 153556393.

Almost surely, 2^1228451116 is an apocalyptic number.

It is an amenable number.

1228451116 is a deficient number, since it is larger than the sum of its proper divisors (921338344).

1228451116 is a wasteful number, since it uses less digits than its factorization.

1228451116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307112783 (or 307112781 counting only the distinct ones).

The product of its digits is 3840, while the sum is 31.

The square root of 1228451116 is about 35049.2669823493. The cubic root of 1228451116 is about 1070.9913414194.

Adding to 1228451116 its reverse (6111548221), we get a palindrome (7339999337).

The spelling of 1228451116 in words is "one billion, two hundred twenty-eight million, four hundred fifty-one thousand, one hundred sixteen".