1109720016 has 60 divisors (see below), whose sum is σ = 3288368772. Its totient is φ = 348146688.

The previous prime is 1109720009. The next prime is 1109720039. The reversal of 1109720016 is 6100279011.

1109720016 = T₉₀₅₃ + T₉₀₅₄ + ... + T₉₀₇₉.

It can be written as a sum of positive squares in 2 ways, for example, as 800663616 + 309056400 = 28296^2 + 17580^2 .

It is a super-2 number, since 2×1109720016² = 2462957027822080512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224211 + ... + 229106.

Almost surely, 2^1109720016 is an apocalyptic number.

1109720016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1109720016 is an abundant number, since it is smaller than the sum of its proper divisors (2178648756).

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

1109720016 is a wasteful number, since it uses less digits than its factorization.

1109720016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453348 (or 453339 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 1109720016 is about 33312.4603714586. The cubic root of 1109720016 is about 1035.3117425425.

Adding to 1109720016 its reverse (6100279011), we get a palindrome (7209999027).

It can be divided in two parts, 11097 and 20016, that added together give a palindrome (31113).

The spelling of 1109720016 in words is "one billion, one hundred nine million, seven hundred twenty thousand, sixteen".