1228490369 has 8 divisors (see below), whose sum is σ = 1245212160. Its totient is φ = 1211798016.

The previous prime is 1228490327. The next prime is 1228490399. The reversal of 1228490369 is 9630948221.

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 1228490369 - 2⁸ = 1228490113 is a prime.

It is a super-2 number, since 2×1228490369² = 3018377173451512322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228490309) 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, 84344 + ... + 97830.

It is an arithmetic number, because the mean of its divisors is an integer number (155651520).

Almost surely, 2^1228490369 is an apocalyptic number.

It is an amenable number.

1228490369 is a deficient number, since it is larger than the sum of its proper divisors (16721791).

1228490369 is a wasteful number, since it uses less digits than its factorization.

1228490369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14719.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1228490369 is about 35049.8269467910. The cubic root of 1228490369 is about 1071.0027485143.

The spelling of 1228490369 in words is "one billion, two hundred twenty-eight million, four hundred ninety thousand, three hundred sixty-nine".