1109154816 has 352 divisors, whose sum is σ = 4103170560. Its totient is φ = 287539200.

The previous prime is 1109154803. The next prime is 1109154821. The reversal of 1109154816 is 6184519011.

It is a happy number.

1109154816 is a `hidden beast` number, since 1 + 10 + 91 + 548 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (352).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2128636 + ... + 2129156.

Almost surely, 2^1109154816 is an apocalyptic number.

1109154816 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 1109154816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2051585280).

1109154816 is an abundant number, since it is smaller than the sum of its proper divisors (2994015744).

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

1109154816 is a wasteful number, since it uses less digits than its factorization.

1109154816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 1109154816 is about 33303.9759788527. The cubic root of 1109154816 is about 1035.1359451761.

The spelling of 1109154816 in words is "one billion, one hundred nine million, one hundred fifty-four thousand, eight hundred sixteen".