616538190 has 32 divisors (see below), whose sum is σ = 1480615200. Its totient is φ = 164307584.

The previous prime is 616538183. The next prime is 616538191. The reversal of 616538190 is 91835616.

616538190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×616538190² = 760238679456952200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616538191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50836 + ... + 61784.

It is an arithmetic number, because the mean of its divisors is an integer number (46269225).

Almost surely, 2^616538190 is an apocalyptic number.

616538190 is an abundant number, since it is smaller than the sum of its proper divisors (864077010).

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

616538190 is a wasteful number, since it uses less digits than its factorization.

616538190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12836.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 616538190 is about 24830.1870713855. The cubic root of 616538190 is about 851.1118966663. Note that the first 3 decimals are identical.

The spelling of 616538190 in words is "six hundred sixteen million, five hundred thirty-eight thousand, one hundred ninety".