1138476929 has 4 divisors (see below), whose sum is σ = 1138955076. Its totient is φ = 1137998784.

The previous prime is 1138476917. The next prime is 1138476947. The reversal of 1138476929 is 9296748311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 433680625 + 704796304 = 20825^2 + 26548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138476929 - 2²⁰ = 1137428353 is a prime.

It is a super-2 number, since 2×1138476929² = 2592259435730542082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138475929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235484 + ... + 240269.

It is an arithmetic number, because the mean of its divisors is an integer number (284738769).

Almost surely, 2^1138476929 is an apocalyptic number.

It is an amenable number.

1138476929 is a deficient number, since it is larger than the sum of its proper divisors (478147).

1138476929 is an equidigital number, since it uses as much as digits as its factorization.

1138476929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478146.

The product of its digits is 653184, while the sum is 50.

The square root of 1138476929 is about 33741.3237588569. The cubic root of 1138476929 is about 1044.1784952533.

The spelling of 1138476929 in words is "one billion, one hundred thirty-eight million, four hundred seventy-six thousand, nine hundred twenty-nine".