35918381 has 2 divisors, whose sum is σ = 35918382. Its totient is φ = 35918380.

The previous prime is 35918369. The next prime is 35918383. The reversal of 35918381 is 18381953.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22005481 + 13912900 = 4691^2 + 3730^2 .

It is an emirp because it is prime and its reverse (18381953) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35918381 is a prime.

It is a super-2 number, since 2×35918381² = 2580260187322322, which contains 22 as substring.

Together with 35918383, 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 (35918383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17959190 + 17959191.

It is an arithmetic number, because the mean of its divisors is an integer number (17959191).

Almost surely, 2^35918381 is an apocalyptic number.

It is an amenable number.

35918381 is a deficient number, since it is larger than the sum of its proper divisors (1).

35918381 is an equidigital number, since it uses as much as digits as its factorization.

35918381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 35918381 is about 5993.1945571623. The cubic root of 35918381 is about 329.9429990314.

The spelling of 35918381 in words is "thirty-five million, nine hundred eighteen thousand, three hundred eighty-one".