2893946381 has 2 divisors, whose sum is σ = 2893946382. Its totient is φ = 2893946380.

The previous prime is 2893946359. The next prime is 2893946383. The reversal of 2893946381 is 1836493982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2253400900 + 640545481 = 47470^2 + 25309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2893946381 is a prime.

It is a super-2 number, since 2×2893946381² = 16749851312205994322, which contains 22 as substring.

Together with 2893946383, 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 (2893946383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1446973190 + 1446973191.

It is an arithmetic number, because the mean of its divisors is an integer number (1446973191).

Almost surely, 2^2893946381 is an apocalyptic number.

It is an amenable number.

2893946381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2893946381 is an equidigital number, since it uses as much as digits as its factorization.

2893946381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 53.

The square root of 2893946381 is about 53795.4122672185. The cubic root of 2893946381 is about 1425.0501890192.

The spelling of 2893946381 in words is "two billion, eight hundred ninety-three million, nine hundred forty-six thousand, three hundred eighty-one".