1228510805 has 8 divisors (see below), whose sum is σ = 1491975072. Its totient is φ = 970967248.

The previous prime is 1228510771. The next prime is 1228510807. The reversal of 1228510805 is 5080158221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1228510805 - 2¹² = 1228506709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228510807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1479719 + ... + 1480548.

It is an arithmetic number, because the mean of its divisors is an integer number (186496884).

Almost surely, 2^1228510805 is an apocalyptic number.

It is an amenable number.

1228510805 is a deficient number, since it is larger than the sum of its proper divisors (263464267).

1228510805 is an equidigital number, since it uses as much as digits as its factorization.

1228510805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960355.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 1228510805 is about 35050.1184734089. The cubic root of 1228510805 is about 1071.0086872098.

The spelling of 1228510805 in words is "one billion, two hundred twenty-eight million, five hundred ten thousand, eight hundred five".