1147220916 has 12 divisors (see below), whose sum is σ = 2676848832. Its totient is φ = 382406968.

The previous prime is 1147220909. The next prime is 1147220929. The reversal of 1147220916 is 6190227411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1147220916² = 2632231660215758112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47800860 + ... + 47800883.

It is an arithmetic number, because the mean of its divisors is an integer number (223070736).

Almost surely, 2^1147220916 is an apocalyptic number.

It is an amenable number.

1147220916 is an abundant number, since it is smaller than the sum of its proper divisors (1529627916).

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

1147220916 is a wasteful number, since it uses less digits than its factorization.

1147220916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95601750 (or 95601748 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 1147220916 is about 33870.6497723324. The cubic root of 1147220916 is about 1046.8449253955.

The spelling of 1147220916 in words is "one billion, one hundred forty-seven million, two hundred twenty thousand, nine hundred sixteen".