1228084913 has 16 divisors (see below), whose sum is σ = 1437984576. Its totient is φ = 1036362240.

The previous prime is 1228084909. The next prime is 1228084939. The reversal of 1228084913 is 3194808221.

It is a cyclic number.

It is not a de Polignac number, because 1228084913 - 2² = 1228084909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1228084943) 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, 31331 + ... + 58632.

It is an arithmetic number, because the mean of its divisors is an integer number (89874036).

Almost surely, 2^1228084913 is an apocalyptic number.

It is an amenable number.

1228084913 is a deficient number, since it is larger than the sum of its proper divisors (209899663).

1228084913 is a wasteful number, since it uses less digits than its factorization.

1228084913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90064.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1228084913 is about 35044.0424751483. The cubic root of 1228084913 is about 1070.8849095027.

It can be divided in two parts, 122808 and 4913, that added together give a palindrome (127721).

The spelling of 1228084913 in words is "one billion, two hundred twenty-eight million, eighty-four thousand, nine hundred thirteen".