1616378112 has 72 divisors (see below), whose sum is σ = 4779934880. Its totient is φ = 538790400.

The previous prime is 1616378077. The next prime is 1616378117. The reversal of 1616378112 is 2118736161.

1616378112 is a `hidden beast` number, since 1 + 6 + 1 + 637 + 8 + 1 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1616378112² = 5225356401905369088, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1616378117) 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, 110014 + ... + 123837.

Almost surely, 2^1616378112 is an apocalyptic number.

1616378112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1616378112 is an abundant number, since it is smaller than the sum of its proper divisors (3163556768).

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

1616378112 is an equidigital number, since it uses as much as digits as its factorization.

1616378112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233876 (or 233856 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 1616378112 is about 40204.2051531926. The cubic root of 1616378112 is about 1173.5843792485.

The spelling of 1616378112 in words is "one billion, six hundred sixteen million, three hundred seventy-eight thousand, one hundred twelve".