3500381 has 2 divisors, whose sum is σ = 3500382. Its totient is φ = 3500380.

The previous prime is 3500353. The next prime is 3500383. The reversal of 3500381 is 1830053.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3496900 + 3481 = 1870^2 + 59^2 .

It is an emirp because it is prime and its reverse (1830053) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3500381 - 2¹⁸ = 3238237 is a prime.

It is a super-2 number, since 2×3500381² = 24505334290322, which contains 22 as substring.

Together with 3500383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3500383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1750190 + 1750191.

It is an arithmetic number, because the mean of its divisors is an integer number (1750191).

Almost surely, 2^3500381 is an apocalyptic number.

It is an amenable number.

3500381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3500381 is an equidigital number, since it uses as much as digits as its factorization.

3500381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 3500381 is about 1870.9305171492. The cubic root of 3500381 is about 151.8349576339.

The spelling of 3500381 in words is "three million, five hundred thousand, three hundred eighty-one".