1228559955 has 32 divisors (see below), whose sum is σ = 2251513344. Its totient is φ = 560376576.

The previous prime is 1228559909. The next prime is 1228559971. The reversal of 1228559955 is 5599558221.

It is not a de Polignac number, because 1228559955 - 2⁸ = 1228559699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1228559898 and 1228559907.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35184 + ... + 60786.

It is an arithmetic number, because the mean of its divisors is an integer number (70359792).

Almost surely, 2^1228559955 is an apocalyptic number.

1228559955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1228559955 is a deficient number, since it is larger than the sum of its proper divisors (1022953389).

1228559955 is a wasteful number, since it uses less digits than its factorization.

1228559955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26075.

The product of its digits is 1620000, while the sum is 51.

The square root of 1228559955 is about 35050.8196052532. The cubic root of 1228559955 is about 1071.0229699156.

The spelling of 1228559955 in words is "one billion, two hundred twenty-eight million, five hundred fifty-nine thousand, nine hundred fifty-five".