1228415853 has 16 divisors (see below), whose sum is σ = 1894427136. Its totient is φ = 693493680.

The previous prime is 1228415849. The next prime is 1228415861. The reversal of 1228415853 is 3585148221.

It is not a de Polignac number, because 1228415853 - 2² = 1228415849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228415803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350643 + ... + 354128.

It is an arithmetic number, because the mean of its divisors is an integer number (118401696).

Almost surely, 2^1228415853 is an apocalyptic number.

It is an amenable number.

1228415853 is a deficient number, since it is larger than the sum of its proper divisors (666011283).

1228415853 is an equidigital number, since it uses as much as digits as its factorization.

1228415853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704864.

The product of its digits is 76800, while the sum is 39.

The square root of 1228415853 is about 35048.7639297023. The cubic root of 1228415853 is about 1070.9810936289.

The spelling of 1228415853 in words is "one billion, two hundred twenty-eight million, four hundred fifteen thousand, eight hundred fifty-three".