616144438 has 16 divisors (see below), whose sum is σ = 1137497760. Its totient is φ = 243749376.

The previous prime is 616144427. The next prime is 616144439. The reversal of 616144438 is 834441616.

It is a junction number, because it is equal to n+sod(n) for n = 616144397 and 616144406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616144439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1692523 + ... + 1692886.

It is an arithmetic number, because the mean of its divisors is an integer number (71093610).

Almost surely, 2^616144438 is an apocalyptic number.

616144438 is a deficient number, since it is larger than the sum of its proper divisors (521353322).

616144438 is a wasteful number, since it uses less digits than its factorization.

616144438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385431.

The product of its digits is 55296, while the sum is 37.

The square root of 616144438 is about 24822.2569078640. The cubic root of 616144438 is about 850.9306705961.

The spelling of 616144438 in words is "six hundred sixteen million, one hundred forty-four thousand, four hundred thirty-eight".