1138617629 has 4 divisors (see below), whose sum is σ = 1162843584. Its totient is φ = 1114391676.

The previous prime is 1138617607. The next prime is 1138617637. The reversal of 1138617629 is 9267168311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1138617629 - 2⁸ = 1138617373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1138617629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138617329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12112907 + ... + 12113000.

It is an arithmetic number, because the mean of its divisors is an integer number (290710896).

Almost surely, 2^1138617629 is an apocalyptic number.

It is an amenable number.

1138617629 is a deficient number, since it is larger than the sum of its proper divisors (24225955).

1138617629 is an equidigital number, since it uses as much as digits as its factorization.

1138617629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24225954.

The product of its digits is 108864, while the sum is 44.

The square root of 1138617629 is about 33743.4086748805. The cubic root of 1138617629 is about 1044.2215088207.

The spelling of 1138617629 in words is "one billion, one hundred thirty-eight million, six hundred seventeen thousand, six hundred twenty-nine".