7482782381 has 2 divisors, whose sum is σ = 7482782382. Its totient is φ = 7482782380.

The previous prime is 7482782327. The next prime is 7482782383. The reversal of 7482782381 is 1832872847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5573966281 + 1908816100 = 74659^2 + 43690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7482782381 is a prime.

It is a super-2 number, since 2×7482782381² (a number of 21 digits) contains 22 as substring.

Together with 7482782383, 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 (7482782383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3741391190 + 3741391191.

It is an arithmetic number, because the mean of its divisors is an integer number (3741391191).

Almost surely, 2^7482782381 is an apocalyptic number.

It is an amenable number.

7482782381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7482782381 is an equidigital number, since it uses as much as digits as its factorization.

7482782381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1204224, while the sum is 50.

The square root of 7482782381 is about 86503.0772920825. The cubic root of 7482782381 is about 1955.9347906890.

The spelling of 7482782381 in words is "seven billion, four hundred eighty-two million, seven hundred eighty-two thousand, three hundred eighty-one".