1818468629 has 2 divisors, whose sum is σ = 1818468630. Its totient is φ = 1818468628.

The previous prime is 1818468571. The next prime is 1818468661. The reversal of 1818468629 is 9268648181.

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., 1762068529 + 56400100 = 41977^2 + 7510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1818468629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1818468679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909234314 + 909234315.

It is an arithmetic number, because the mean of its divisors is an integer number (909234315).

Almost surely, 2^1818468629 is an apocalyptic number.

It is an amenable number.

1818468629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818468629 is an equidigital number, since it uses as much as digits as its factorization.

1818468629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 53.

The square root of 1818468629 is about 42643.5062934557. The cubic root of 1818468629 is about 1220.5866185868.

The spelling of 1818468629 in words is "one billion, eight hundred eighteen million, four hundred sixty-eight thousand, six hundred twenty-nine".