1118439629 has 2 divisors, whose sum is σ = 1118439630. Its totient is φ = 1118439628.

The previous prime is 1118439563. The next prime is 1118439631. The reversal of 1118439629 is 9269348111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1026241225 + 92198404 = 32035^2 + 9602^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118439629 - 2¹⁶ = 1118374093 is a prime.

It is a Sophie Germain prime.

Together with 1118439631, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1118439629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118439029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559219814 + 559219815.

It is an arithmetic number, because the mean of its divisors is an integer number (559219815).

Almost surely, 2^1118439629 is an apocalyptic number.

It is an amenable number.

1118439629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118439629 is an equidigital number, since it uses as much as digits as its factorization.

1118439629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 1118439629 is about 33443.0804352709. The cubic root of 1118439629 is about 1038.0163213960.

The spelling of 1118439629 in words is "one billion, one hundred eighteen million, four hundred thirty-nine thousand, six hundred twenty-nine".