4386545381 has 2 divisors, whose sum is σ = 4386545382. Its totient is φ = 4386545380.

The previous prime is 4386545341. The next prime is 4386545407. The reversal of 4386545381 is 1835456834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3153833281 + 1232712100 = 56159^2 + 35110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4386545381 is a prime.

It is a super-5 number, since 5×4386545381⁵ (a number of 49 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4386545321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2193272690 + 2193272691.

It is an arithmetic number, because the mean of its divisors is an integer number (2193272691).

Almost surely, 2^4386545381 is an apocalyptic number.

It is an amenable number.

4386545381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4386545381 is an equidigital number, since it uses as much as digits as its factorization.

4386545381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382400, while the sum is 47.

The square root of 4386545381 is about 66231.0001509867. Note that the first 3 decimals coincide. The cubic root of 4386545381 is about 1636.9705849958.

The spelling of 4386545381 in words is "four billion, three hundred eighty-six million, five hundred forty-five thousand, three hundred eighty-one".