1227158016 has 160 divisors (see below), whose sum is σ = 3933557760. Its totient is φ = 332107776.

The previous prime is 1227157999. The next prime is 1227158029. The reversal of 1227158016 is 6108517221.

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, 201285 + ... + 207291.

It is an arithmetic number, because the mean of its divisors is an integer number (24584736).

Almost surely, 2^1227158016 is an apocalyptic number.

1227158016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1227158016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966778880).

1227158016 is an abundant number, since it is smaller than the sum of its proper divisors (2706399744).

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

1227158016 is an equidigital number, since it uses as much as digits as its factorization.

1227158016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6054 (or 6038 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 1227158016 is about 35030.8152345902. The cubic root of 1227158016 is about 1070.6154249240.

The spelling of 1227158016 in words is "one billion, two hundred twenty-seven million, one hundred fifty-eight thousand, sixteen".