1616547044 has 36 divisors (see below), whose sum is σ = 3293641260. Its totient is φ = 692213760.

The previous prime is 1616547013. The next prime is 1616547047. The reversal of 1616547044 is 4407456161.

It can be written as a sum of positive squares in 2 ways, for example, as 480048100 + 1136498944 = 21910^2 + 33712^2 .

It is a super-2 number, since 2×1616547044² = 5226448690930275872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1616546989 and 1616547007.

It is not an unprimeable number, because it can be changed into a prime (1616547047) 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 11 ways as a sum of consecutive naturals, for example, 287492 + ... + 293060.

It is an arithmetic number, because the mean of its divisors is an integer number (91490035).

Almost surely, 2^1616547044 is an apocalyptic number.

1616547044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1616547044 is an abundant number, since it is smaller than the sum of its proper divisors (1677094216).

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

1616547044 is a wasteful number, since it uses less digits than its factorization.

1616547044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068 (or 7059 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1616547044 is about 40206.3060228119. The cubic root of 1616547044 is about 1173.6252626385.

The spelling of 1616547044 in words is "one billion, six hundred sixteen million, five hundred forty-seven thousand, forty-four".