1228367718 has 24 divisors (see below), whose sum is σ = 2667038400. Its totient is φ = 408598224.

The previous prime is 1228367711. The next prime is 1228367719. The reversal of 1228367718 is 8177638221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228367711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62613 + ... + 79856.

It is an arithmetic number, because the mean of its divisors is an integer number (111126600).

Almost surely, 2^1228367718 is an apocalyptic number.

1228367718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1228367718 is an abundant number, since it is smaller than the sum of its proper divisors (1438670682).

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

1228367718 is a wasteful number, since it uses less digits than its factorization.

1228367718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142956 (or 142953 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 1228367718 is about 35048.0772368471. The cubic root of 1228367718 is about 1070.9671047862.

The spelling of 1228367718 in words is "one billion, two hundred twenty-eight million, three hundred sixty-seven thousand, seven hundred eighteen".