1228451115 has 8 divisors (see below), whose sum is σ = 1965521808. Its totient is φ = 655173920.

The previous prime is 1228451111. The next prime is 1228451117. The reversal of 1228451115 is 5111548221.

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

It is not a de Polignac number, because 1228451115 - 2² = 1228451111 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 40948356 + ... + 40948385.

It is an arithmetic number, because the mean of its divisors is an integer number (245690226).

Almost surely, 2^1228451115 is an apocalyptic number.

1228451115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1228451115 is a deficient number, since it is larger than the sum of its proper divisors (737070693).

1228451115 is an equidigital number, since it uses as much as digits as its factorization.

1228451115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81896749.

The product of its digits is 3200, while the sum is 30.

The square root of 1228451115 is about 35049.2669680837. The cubic root of 1228451115 is about 1070.9913411288.

Adding to 1228451115 its reverse (5111548221), we get a palindrome (6339999336).

The spelling of 1228451115 in words is "one billion, two hundred twenty-eight million, four hundred fifty-one thousand, one hundred fifteen".