616165481 has 2 divisors, whose sum is σ = 616165482. Its totient is φ = 616165480.

The previous prime is 616165411. The next prime is 616165483. The reversal of 616165481 is 184561616.

616165481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 430770025 + 185395456 = 20755^2 + 13616^2 .

It is a cyclic number.

It is not a de Polignac number, because 616165481 - 2²⁶ = 549056617 is a prime.

It is a super-2 number, since 2×616165481² = 759319799951922722, which contains 22 as substring.

Together with 616165483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (616165483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308082740 + 308082741.

It is an arithmetic number, because the mean of its divisors is an integer number (308082741).

Almost surely, 2^616165481 is an apocalyptic number.

It is an amenable number.

616165481 is a deficient number, since it is larger than the sum of its proper divisors (1).

616165481 is an equidigital number, since it uses as much as digits as its factorization.

616165481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 616165481 is about 24822.6807778693. The cubic root of 616165481 is about 850.9403576809.

The spelling of 616165481 in words is "six hundred sixteen million, one hundred sixty-five thousand, four hundred eighty-one".