830638851 has 32 divisors (see below), whose sum is σ = 1325237760. Its totient is φ = 452734464.

The previous prime is 830638829. The next prime is 830638883. The reversal of 830638851 is 158836038.

It is not a de Polignac number, because 830638851 - 2⁷ = 830638723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (830638811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42331 + ... + 58763.

It is an arithmetic number, because the mean of its divisors is an integer number (41413680).

Almost surely, 2^830638851 is an apocalyptic number.

830638851 is a deficient number, since it is larger than the sum of its proper divisors (494598909).

830638851 is a wasteful number, since it uses less digits than its factorization.

830638851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16555.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 830638851 is about 28820.8058700655. The cubic root of 830638851 is about 940.0206917884.

The spelling of 830638851 in words is "eight hundred thirty million, six hundred thirty-eight thousand, eight hundred fifty-one".