838630945 has 16 divisors (see below), whose sum is σ = 1052248320. Its totient is φ = 640429504.

The previous prime is 838630943. The next prime is 838630951. The reversal of 838630945 is 549036838.

It is a cyclic number.

It is not a de Polignac number, because 838630945 - 2¹ = 838630943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 838630895 and 838630904.

It is not an unprimeable number, because it can be changed into a prime (838630943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51372 + ... + 65698.

It is an arithmetic number, because the mean of its divisors is an integer number (65765520).

Almost surely, 2^838630945 is an apocalyptic number.

It is an amenable number.

838630945 is a deficient number, since it is larger than the sum of its proper divisors (213617375).

838630945 is a wasteful number, since it uses less digits than its factorization.

838630945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14864.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 838630945 is about 28959.1254184238. The cubic root of 838630945 is about 943.0259155385.

The spelling of 838630945 in words is "eight hundred thirty-eight million, six hundred thirty thousand, nine hundred forty-five".