1228321854 has 128 divisors (see below), whose sum is σ = 2996352000. Its totient is φ = 371758464.

The previous prime is 1228321849. The next prime is 1228321889. The reversal of 1228321854 is 4581238221.

It is a happy number.

1228321854 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2412952 + ... + 2413460.

It is an arithmetic number, because the mean of its divisors is an integer number (23409000).

Almost surely, 2^1228321854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228321854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498176000).

1228321854 is an abundant number, since it is smaller than the sum of its proper divisors (1768030146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228321854 is a wasteful number, since it uses less digits than its factorization.

1228321854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 633 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 1228321854 is about 35047.4229295108. The cubic root of 1228321854 is about 1070.9537755944.

The spelling of 1228321854 in words is "one billion, two hundred twenty-eight million, three hundred twenty-one thousand, eight hundred fifty-four".