1181469216 has 48 divisors (see below), whose sum is σ = 3159886464. Its totient is φ = 386390784.

The previous prime is 1181469187. The next prime is 1181469217. The reversal of 1181469216 is 6129641811.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1181469217) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 111016 + ... + 121191.

It is an arithmetic number, because the mean of its divisors is an integer number (65830968).

Almost surely, 2^1181469216 is an apocalyptic number.

1181469216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1181469216 is an abundant number, since it is smaller than the sum of its proper divisors (1978417248).

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

1181469216 is a wasteful number, since it uses less digits than its factorization.

1181469216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232273 (or 232265 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 1181469216 is about 34372.5066877585. The cubic root of 1181469216 is about 1057.1601975381.

The spelling of 1181469216 in words is "one billion, one hundred eighty-one million, four hundred sixty-nine thousand, two hundred sixteen".