4645135381 has 2 divisors, whose sum is σ = 4645135382. Its totient is φ = 4645135380.

The previous prime is 4645135379. The next prime is 4645135423. The reversal of 4645135381 is 1835315464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4194634756 + 450500625 = 64766^2 + 21225^2 .

It is a cyclic number.

It is not a de Polignac number, because 4645135381 - 2¹ = 4645135379 is a prime.

It is a super-2 number, since 2×4645135381² = 43154565415636030322, which contains 22 as substring.

Together with 4645135379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4645135351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322567690 + 2322567691.

It is an arithmetic number, because the mean of its divisors is an integer number (2322567691).

Almost surely, 2^4645135381 is an apocalyptic number.

It is an amenable number.

4645135381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4645135381 is an equidigital number, since it uses as much as digits as its factorization.

4645135381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 40.

The square root of 4645135381 is about 68155.2300340920. The cubic root of 4645135381 is about 1668.5252833870.

The spelling of 4645135381 in words is "four billion, six hundred forty-five million, one hundred thirty-five thousand, three hundred eighty-one".