838842148 has 6 divisors (see below), whose sum is σ = 1467973766. Its totient is φ = 419421072.

The previous prime is 838842143. The next prime is 838842161. The reversal of 838842148 is 841248838.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 460617444 + 378224704 = 21462^2 + 19448^2 .

It is a super-2 number, since 2×838842148² = 1407312298522507808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 838842098 and 838842107.

It is not an unprimeable number, because it can be changed into a prime (838842143) 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 as a sum of consecutive naturals, namely, 104855265 + ... + 104855272.

Almost surely, 2^838842148 is an apocalyptic number.

It is an amenable number.

838842148 is a deficient number, since it is larger than the sum of its proper divisors (629131618).

838842148 is a wasteful number, since it uses less digits than its factorization.

838842148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209710541 (or 209710539 counting only the distinct ones).

The product of its digits is 393216, while the sum is 46.

The square root of 838842148 is about 28962.7717596227. The cubic root of 838842148 is about 943.1050735941.

The spelling of 838842148 in words is "eight hundred thirty-eight million, eight hundred forty-two thousand, one hundred forty-eight".