7381819 has 2 divisors, whose sum is σ = 7381820. Its totient is φ = 7381818.

The previous prime is 7381789. The next prime is 7381831. The reversal of 7381819 is 9181837.

7381819 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7381819 - 2⁷ = 7381691 is a prime.

It is a super-2 number, since 2×7381819² = 108982503497522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7381849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3690909 + 3690910.

It is an arithmetic number, because the mean of its divisors is an integer number (3690910).

Almost surely, 2^7381819 is an apocalyptic number.

7381819 is a deficient number, since it is larger than the sum of its proper divisors (1).

7381819 is an equidigital number, since it uses as much as digits as its factorization.

7381819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 37.

The square root of 7381819 is about 2716.9503123907. The cubic root of 7381819 is about 194.7097940481.

It can be divided in two parts, 73818 and 19, that added together give a palindrome (73837).

The spelling of 7381819 in words is "seven million, three hundred eighty-one thousand, eight hundred nineteen".