1227219564 has 48 divisors (see below), whose sum is σ = 2967199200. Its totient is φ = 394308096.

The previous prime is 1227219551. The next prime is 1227219607. The reversal of 1227219564 is 4659127221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232992 + ... + 238200.

It is an arithmetic number, because the mean of its divisors is an integer number (61816650).

Almost surely, 2^1227219564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1227219564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483599600).

1227219564 is an abundant number, since it is smaller than the sum of its proper divisors (1739979636).

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

1227219564 is a wasteful number, since it uses less digits than its factorization.

1227219564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922 (or 5920 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 1227219564 is about 35031.6937072703. The cubic root of 1227219564 is about 1070.6333234982.

The spelling of 1227219564 in words is "one billion, two hundred twenty-seven million, two hundred nineteen thousand, five hundred sixty-four".